Tennessee marble

Quarried block of pink Tennessee marble

Tennessee marble is a type of crystalline limestone found primarily in East Tennessee, in the southeastern United States. Long esteemed by architects and builders for its pinkish-gray color and the ease with which it is polished, this stone has been used in the construction of numerous notable buildings and monuments throughout the United States and Canada, including the National Gallery of Art and the National Air and Space Museum in Washington, D.C., the Minnesota State Capitol, as well as parts of the United States Capitol in Washington,[1] Grand Central Terminal in New York,[2] and Union Station in Toronto.[3] Tennessee marble achieved such popularity in the late-19th century that Knoxville, the stone's primary finishing and distribution center, became known as "The Marble City."[4]

While Tennessee marble is not true marble, its crystalline nature lends it a strong resemblance to marble, especially when polished.[5] The stone occurs in belts of Ordovician-period rocks known as the Holston Formation,[5] and is quarried primarily in Knox, Blount, Loudon, Union, and Hawkins counties.[6] While pink is the most well-known Tennessee marble color, the stone also occurs in gray, dark brown ("cedar"), and variegated shades.[6]

The use of Tennessee marble declined after World War II, when cheaper building materials became widely available. There are currently only six active Tennessee marble quarries, all operated by the Tennessee Marble Company.[7] The stone has most recently been used in the floor of the United States Capitol Visitor Center, and for the 170-ton "First Amendment" tablet that adorns the facade of Washington's Newseum.[8]

Geology

Occurrence

Tennessee marble is found in the Appalachian Ridge-and-Valley Province, a series of alternating elongate ridges and valleys that lie between the Blue Ridge Mountains and the Cumberland Plateau. The Holston Formation, in which Tennessee marble is found, occurs in a series of belts that follow the natural folds and faults of the Ridges-and-Valleys. While these belts can be up to 75 miles (121 km) long, they are rarely more than a few miles wide. In 1911, the Tennessee State Geological Survey identified six primary Holston Formation belts containing Tennessee marble: the Luttrell, Black Oak, Concord, Knoxville, Bays Mountain, and French Broad belts. A seventh belt, the Galbraith in Hawkins County, is considered an extension of the Black Oak.[6]

The Luttrell belt, the westernmost of the Holston Formation belts, stretches along Copper Ridge from Beaver Creek in Fountain City northeast to Galbraith Springs (about 10 miles (16 km) west of Rogersville) in Hawkins County. The Black Oak belt stretches along Black Oak Ridge from Monroe County to the Corryton area in north Knox County. The Concord belt, one of the most heavily quarried, stretches from Sweetwater through Knox County to Strawberry Plains. The Knoxville belt, also heavily quarried, stretches from southeast of Sweetwater to Ruggles Ferry (east of Knoxville) in Knox. The Bays Mountain belt is found along the southwestern end of Bays Mountain in south Knox County, and stretches into northern Blount County. The French Broad belt is a u-shaped belt found at the confluence of the French Broad and Holston rivers ("Forks-of-the-River").[6]

Lithology

Polished pink Tennessee marble surface

While true marble is metamorphic, Tennessee marble is sedimentary, and is therefore classified as limestone.[5] Tennessee marble was formed from the accumulation of bryozoan and other primordial marine lifeforms 460 million years ago, during the Ordovician period. Even when polished, Tennessee marble retains a fossiliferous texture, with bryozoan and crinoid fossils being among the most commonly found.[5] A noticeable feature of Tennessee marble is the presence of jagged horizontal gray or black lines, or "stylolites." Known as "crowfeet" by quarrymen, these form from residual insoluble materials left over from the natural limestone dissolution processes.[5]

The most well-known shades of Tennessee marble are pink, gray, and cedar, but it also is found in blue, yellow, and cream shades.[6] Along with its aesthetic colors, builders preferred the stone for its durability, the ease with which it is polished, and the fact that the stone is virtually impervious to stains.[6] Tennessee marble is also easily converted into lime, and mid-20th century lime companies occasionally erected kilns near defunct quarries for this purpose.[9]

History

The 18th-century "Old Stone House" near Friendsville, Tennessee, built of brown Tennessee marble

As early as the late 18th century, Tennessee marble was being harvested for construction purposes, most notably for the Ramsey House on the outskirts of Knoxville and the "Old Stone House" near modern Friendsville. Visitors to East Tennessee were reporting the existence of marble beds in the region as early as the 1810s, and state geologist Gerard Troost provided an extensive description of Tennessee marble deposits in an 1831 report to the Tennessee General Assembly. The Rogersville Marble Company, founded in 1838, produced monuments and furniture from Tennessee marble extracted from a quarry in Hawkins County. Marble Hall, a house built by the company's director, Orville Rice, contained numerous Tennessee marble interior elements, and acted as a showplace for the company.[10]

In 1850, Governor William Trousdale chose the Rogersville Marble Company's marble as the state's representative stone for the construction of the Washington Monument. During this same period, marble from Hawkins County, either from Rice's quarry or a rival quarry south of Rogersville, was used in U.S. Capitol extension projects (William Dougherty, the construction superintendent for the Washington Monument, was instrumental in obtaining the marble). Transporting the quarried blocks out of the region presented a major challenge for these early companies. Mule teams, often led by local African American entrepreneurs, carried the blocks to the Holston River, where they were loaded onto flatboats and transported downstream.[10]

1856 newspaper ad for a Knoxville-based Tennessee marble company

By the early 1850s, at least two marble quarries were in operation in Knox County, one of which supplied marble for parts of the Tennessee State Capitol. The arrival of railroads in the region, namely the predecessor lines of the East Tennessee, Virginia and Georgia Railway, provided a major boost for the industry, and helped Knox County overtake Hawkins as the region's primary quarrying and production center. The industry was also aided by an infusion of northern capital in the years following the Civil War.[10]

In 1873, federal architect Alfred B. Mullett used Tennessee marble for Knoxville's Post Office and Customs House, sparking a nationwide curiosity in the stone. Mullett acquired the marble from a quarry at Forks-of-the-River, where the Holston and French Broad rivers join to form the Tennessee River east of Knoxville. After the building's completion, businessman George Ross and several associates organized the Knoxville Marble Company to assume control of this quarry, and provided marble for the construction of the Mullett-designed Customs House in St. Louis during the mid-1870s. Following Ross's death, his son, John M. Ross, became president of the company.[10]

By 1882, eleven Tennessee marble quarries were in operation in Knox County alone.[11] This number had doubled within a decade,[12] as the rising popularity of Neoclassical architecture brought about a rapid increase in demand for marble.[10] Knoxville, the industry's chief financial and production center, became known as "The Marble City" during this period and even included a marble mining derrick on the Knoxville flag. The community of Concord, located west of Knoxville, became a key marble transloading center, where blocks were transferred from boats to rail cars for transport out of the region. By 1885, Concord was home to ten marble-related companies.[10]

Marble blocks being loaded onto train cars at what is now Mead's Quarry in 1895

Ross eventually sold the Forks-of-the-River quarry to the Baltimore-based W.H. Evans Company, which had opened a large marble finishing mill in Knoxville.[13] Ross then purchased a quarry in the Island Home area of South Knoxville. In 1898, he sold this quarry (later known as the "Mead Quarry") to the Republic Marble Company, which had been operating quarries near Concord and Luttrell throughout the previous decade. Republic had been founded by Knoxville Iron Company executive William S. Mead (1833–1908), and at the time was managed by his son, Frank S. Mead (1864–1936). Though Republic purchased Ross's business interests and was subsequently known as "Ross-Republic," John M. Ross continued operating independently, opening a quarry (the "Ross Quarry") on land adjacent to the Mead Quarry. The Ross Quarry supplied marble for the J.P. Morgan Library in New York in the early 1900s.[10]

Knoxville banker John J. Craig (1820–1892) began buying up quarry properties in the 1870s, and had established his own marble company, John J. Craig and Company, in 1878.[14] Following his death, his son, John J. Craig, Jr. (1860–1904), took control of the company, and helped establish the Tennessee Producers Marble Company, which operated a finishing mill that serviced quarries in Knox, Blount, and Hawkins counties.[10] John J. Craig III (1885–1944), who became president of the company after his father's death, established a large finishing mill, the Candoro Marble Works, in South Knoxville in 1914. James B. Jones, a former Craig company employee, established the Gray-Knox Marble Company, which would build a large mill on Sutherland Avenue in Knoxville.[10]

Marble quarry near Knoxville, circa 1911

By 1908, Tennessee ranked third in the nation in marble production, behind only Vermont and Georgia.[10] While eighty percent of marble quarried in the state was used in furniture and interior decoration,[6] it was best known as a monumental building material. Monuments and buildings constructed of Tennessee marble during the early 20th century include the St. Paul Public Library in Minnesota, the Richard C. Lee U.S. Courthouse in New Haven, Connecticut, and the Firemen's Memorial in Manhattan.[10]

The rise of modern architecture and a preference for the use of concrete, coupled with the onset of the Great Depression, led to a decline in the Tennessee marble industry by the end of the 1920s. The stone experienced a brief resurgence in the 1930s as New Deal federal construction projects encouraged the use of locally quarried building materials. Buildings completed during this period include the National Gallery of Art (West Building), the Knoxville Post Office, and the Tennessee Supreme Court Building in Nashville.[10]

By the 1950s, only five Tennessee marble companies remained in operation. Some companies had turned to secondary products such as lime, which was often produced in kilns located near the quarries. The rise in foreign competition and changes in demand for building materials led to further decline, and most Tennessee marble companies had closed by the mid-1980s.[10] The stone was still produced on a smaller scale, however. It was used in the Edward Larrabee Barnes-designed Knoxville Museum of Art,[15] completed in 1990, and the BarberMcMurry-designed Gay Street addition of Knoxville's East Tennessee History Center, completed in 2005.[16] The Tennessee Marble Company, founded in 1993, is currently the only major producer of Tennessee marble. The company was operating six quarries as of 2007.[17]

Notable Tennessee marble producers

A now-abandoned John J. Craig Company quarry near Friendsville
Walls of the Ross Marble Quarry in South Knoxville (now part of the Ijams Nature Center)
Sullivan channeler, once used to cut blocks at a W.H. Evans Marble Company quarry
  • Rogersville Marble Company, the first Tennessee marble company, founded in 1838 under the directorship of S.D. Mitchell and Orville Rice. The company obtained its marble from a quarry in Hawkins County (possibly located along Caney Creek west of Rogersville), and offered interior furnishings such as floors, doors and mantelpieces. By 1850, Rice was operating a "marble factory" near Rogersville that used water-powered machinery to produce monuments and tombstones.[10]
  • Knoxville Marble Company, founded in 1873 to assume control of the quarry near Forks-of-the-River in east Knox County where the marble for the Knoxville Customs House had been obtained; William Patrick was the first president, George W. Ross was secretary-treasurer. Ross's son, John M. Ross, became president of the company in January 1886. The company eventually sold its Forks quarry to the W.H. Evans Company.[10][12]
  • John J. Craig Company, founded by John J. Craig (1820–1892) in 1878, reorganized as the Great Southern Marble Company in 1884, and joined with Evans to form the Tennessee Producers Marble Company in 1889. In 1896, the company left the Tennessee Producers partnership, and once again operated as the John J. Craig Company.[18] Craig's son, John J. Craig, Jr. (1860–1904), and grandson, John J. Craig III (1885–1944), would eventually serve as presidents of the company.[18] John J. Craig III and several business partners established the Candoro Marble Works in South Knoxville in 1914. The company operated quarries near Friendsville and Concord, and was the foremost producer of pink Tennessee marble in the early 1900s. The company's now-abandoned Friendsville quarry and the Candoro Marble Works have been listed on the National Register of Historic Places.[10]
  • Ross-Republic Marble Company, established in the late 1890s by the merger of the Republic Marble Company and the interests of Knoxville Marble president John M. Ross. After the sale of the Forks-of-the-River quarry to Evans, Ross established a quarrying operation (now known as the Mead Quarry) across the river in South Knoxville. He sold the quarry to Republic in 1898. Republic, led by president Frank S. Mead, had been operating quarries in the Concord area. John M. Ross subsequently purchased a quarry (now known as the "Ross Quarry") on property adjacent to the Mead Quarry, and would operate as an independent dealer in the early 1900s. Both the Mead and Ross quarries are now managed by Knoxville's Ijams Nature Center, and are listed on the National Register of Historic Places.[19][20]
  • W.H. Evans Marble Company, established in Baltimore in 1867, and was overseeing an operation in Hawkins County by 1880;[10] later operated quarries near Friendsville and the former Knoxville Marble quarry at Forks-of-the-River. In 1886, this company built its massive mill near Lonsdale in Knoxville,[12] which by 1911 employed twenty-six gang saws, nine rubbing beds, and over 100 workers to produce over 40,000 square feet (3,700 m2) of finished marble per year.[6] The company also operated two mills in Baltimore, and produced products using both Tennessee and imported marble.[12]
  • J.F. Woods and Company, established by Concord quarry operator James Farmer Woods in the late 19th century. Woods was extracting marble from Callaway Ridge near Concord by the 1890s, and opened a marble cutting mill around 1900.[10]
  • Appalachian Marble Company, established in the late 19th century by Harmon Kreis and Thomas Deane. Kreis, a former Knoxville Marble Company timekeeper, had developed the Gray Knox, American Marble, and Gray Eagle quarries.[10]
  • Tennessee Producers Marble Company, founded in 1889 by John J. Craig and W.H. Evans to market their respective quarrying companies' output; while these two companies left the partnership within a few years, this company persisted under the direction of W.B. McMullen and bought its own quarries.[12][18] In 1911, it was operating the Bond Quarry near Concord, the McMillan Quarry northeast of Knoxville, and the Dunlap Quarry near Friendsville. The company also operated a large mill on University Avenue in downtown Knoxville that employed over twenty-five gang saws to produce over 40,000 square feet (3,700 m2) of finished marble per year.[6]
  • Gray Eagle Marble Company, founded in 1902 by former Craig Company employee John Barksdale Jones; supplied "gray, gray-pink, eagle-pink and argent-gray" shades of marble.[21] Jones's descendants continued operating this company into the mid-20th century. Its mill and office complex still stand on Sutherland Avenue in Knoxville (most recently home to Southeast Precast Concrete).[10]
  • Tennessee Marble Company, founded in 1993. This company currently operates six quarries and two production factories in East Tennessee.[7] After acquiring the assets of Tennessee Valley Marble in 2007, the Tennessee Marble Company became the primary producer of Tennessee marble.[17]

Tennessee marble in art

Sculptor Jack Rich described Tennessee marble as an "excellent sculptural stone," though difficult to work with due to its hardness.[22] Two of the best known Tennessee marble sculptures, E.C. Potter's lions, "Patience" and "Fortitude," stand outside the entrance of the New York Public Library Main Branch.[23] The Piccirilli Brothers also worked with the stone, most notably creating the entrance tripods at the Lincoln Memorial in Washington,[24] and several statues at the base of the USS Maine National Monument in New York.[25] The Italian-born sculptor Albert Milani (1892–1977), who worked at the Candoro Marble Works in Knoxville, created numerous works using Tennessee marble, including the four eagles atop the Knoxville Post Office and the "History of the World" relief at the Pennsylvania State Capitol.[1] Other notable Tennessee marble works include Frances Rich's nurses' memorial ("Spirit of Nursing") at Arlington National Cemetery;[26] Bruno Louis Zimm's Slocum Memorial Fountain in New York's Tompkins Square Park;[27] Joseph Emile Renier's Pomona at Brookgreen Gardens in South Carolina;[28] and Cliff Fragua's statue of the Pueblo leader Po'pay in the National Statuary Hall.[29]

One of the best-known paintings by Knoxville artist Lloyd Branson, Hauling Marble, was inspired by the Tennessee marble industry.[30]

Tennessee marble structures

Structures with Tennessee marble exteriors

NameCityStateCompletedOther informationImageReference
Ramsey HouseKnoxvilleTennessee1797[10]
Old Customs HouseKnoxvilleTennessee1874[10]
James Blackstone Memorial LibraryBranfordConnecticut1896
[10]
Morgan Library & Museum
(McKim Building)		New York CityNew York1903[10]
Chilhowee Park bandstandKnoxvilleTennessee1910[31]
Firemen's MemorialNew York CityNew York1913[10]
St. Paul Public LibrarySt. PaulMinnesota1917[10]
Illinois Centennial MonumentChicagoIllinois1918[32]
Richard C. Lee U.S. Courthouse New HavenConnecticut1919Same marble used in main interior staircase, elevator lobbies, and columns in second-floor lobby[10]
Knoxville Post OfficeKnoxvilleTennessee1934Various shades of Tennessee marble used throughout the building[10]
Tennessee Supreme Court Building NashvilleTennessee1937[10]
National Gallery of ArtWashingtonDistrict of Columbia1941/1978[33]
Robert A. Taft MemorialWashingtonDistrict of Columbia1959
[34]
National Air and Space MuseumWashingtonDistrict of Columbia1975[35]
Knoxville Museum of ArtKnoxvilleTennessee1990[15]
East Tennessee History Center additionKnoxvilleTennessee2005Addition to the 1874 Old Customs House[16]

Structures containing Tennessee marble

NameCityState or CountryCompletedParts containing Tennessee marbleImageReference
United States CapitolWashingtonDistrict of Columbia1850sColumns and balustrades of House and Senate gallery staircases; Marble Room walls[36]
Folsom PowerhouseFolsomCalifornia1895Switchboard[37]
Adriance Memorial LibraryPoughkeepsieNew York1896Hallway[38]
Little Rock U.S. Post Office and CourthouseLittle RockArkansas1897Courtroom interior[39]
McKinley National MemorialCantonOhio1907Interior walls and pedestal[40]
Mechanics National Bank BuildingKnoxvilleTennessee1907Facade[41]
Grand Central TerminalNew York CityNew York1913Main concourse floor[5]
The HolstonKnoxvilleTennessee1913Lower Gay Street and Clinch Avenue facades[42]
James A. Redden Federal CourthouseMedfordOregon1916Lobby floor[43]
Manitoba Legislative BuildingWinnipegCanada1920Rotunda floor[44]
Union Station TorontoCanada1920Great Hall floor[45]
Wilkin County CourthouseBreckenridgeMinnesota1929Interior wainscoting[46]
Cochise County CourthouseBisbeeArizona1930Main lobby[47]
Eldon B. Mahon U.S. CourthouseFort WorthTexas1933Courtroom walls[48]
Indiana War Memorial MuseumIndianapolisIndiana1933North Vestibule and Grand Foyer floors[49]
NewseumWashingtonDistrict of Columbia2008Massive exterior First Amendment tablet[50]
United States Capitol Visitor CenterWashingtonDistrict of Columbia2008First floor[51]

Further reading

See also

References

  1. 1 2 Ann Bennett, National Register of Historic Places Nomination Form for Candoro Marble Works, April 1996.
  2. ↑ The Grand Central Self-Guided Tour. Retrieved: 24 November 2010.
  3. ↑ Union Station - History. Retrieved: 24 November 2010.
  4. ↑ "Ask Doc Knox," "What's With All This 'Marble City' Business?" Metro Pulse 10 May 2010. Accessed at the Internet Archive, 5 October 2015.
  5. 1 2 3 4 5 6 Powell, Wayne G. "Tennessee Marble". Retrieved 20 November 2011.
  6. 1 2 3 4 5 6 7 8 9 Charles Gordon, The Marbles of Tennessee (State of Tennessee Geological Survey, 1911), pp. 5-33.
  7. 1 2 About Tennessee Marble Company Archived 2011-02-07 at the Wayback Machine.. Retrieved: 19 November 2010.
  8. ↑ Blount's Royal Pink Marble Featured in Washington, D.C.. The Daily Times, 6 April 2008. Retrieved: 24 November 2010.
  9. ↑ Information obtained from interpretive markers at the Mead's Quarry section of Ijams Nature Center, Knoxville, Tennessee, November 2010.
  10. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Carroll Van West and Susan W. Knowles, Marble Industry of East Tennessee, ca. 1838-1963, National Register of Historic Places Multiple Property Documentation Form, 2 December 2013.
  11. ↑ C.P. White, Mary Rothrock (ed.), "Commercial and Industrial Trends Since 1865," The French Broad-Holston Country: A History of Knox County, Tennessee (Knoxville, Tenn.: East Tennessee Historical Society, 1972), p. 223.
  12. 1 2 3 4 5 John Wooldridge, George Mellen, William Rule (ed.), Standard History of Knoxville, Tennessee (Chicago: Lewis Publishing Company, 1900; reprinted by Kessinger Books, 2010), pp. 204-206.
  13. ↑ Henry Wellge, Knoxville, Tenn.: County Seat of Knox County, 1886 (Milwaukee: Norris, Wellge and Company, 1886). Map.
  14. ↑ Alice Howell, Lucile Deaderick (ed.), Heart of the Valley: A History of Knoxville, Tennessee (Knoxville, Tenn.: East Tennessee Historical Society, 1976), pp. 510-512.
  15. 1 2 "About the Knoxville Museum of Art," Knoxville Museum of Art official website. Retrieved: 30 October 2014.
  16. 1 2 "Excellence Awards 2005: East Tennessee History Center," Knoxville-Knox County Metropolitan Planning Commission website, 2005. Retrieved: 9 November 2014.
  17. 1 2 Tennessee Marble Co. Acquires Tennessee Valley Marble. Stoneworld.com, 7 May 2007. Retrieved: 24 November 2010.
  18. 1 2 3 Tony VanWinkle, National Register of Historic Places Registration Form for Candoro Marble Works Showroom and Garage, 13 July 2004.
  19. ↑ Susan W. Knowles, Lydia Simpson, and Angela Sirna, National Register of Historic Places Nomination Form for Mead Marble Quarry, 27 August 2013.
  20. ↑ Susan W. Knowles, Lydia Simpson, and Angela Sirna, National Register of Historic Places Nomination Form for Ross Marble Quarry, 27 August 2013.
  21. ↑ One Hundred and Fourteen Per Cent, Knoxville, Tennessee," Traveler's Protective Association Magazine, Vol. XIV, No. 7 (May 1920), p. 17.
  22. ↑ Jack C. Rich, The Materials and Methods of Sculpture (Courier Dover, 1988), p. 226.
  23. ↑ "The Library Lions," New York Public Library website. Retrieved: 7 November 2014.
  24. ↑ Donald Pfanz, National Register of Historic Places Nomination Form for Lincoln Memorial, 24 March 1981, p. 2.
  25. ↑ "U.S.S. Maine National Monument," NYC Parks website. Accessed 24 October 2014.
  26. ↑ Rob McIlvaine, "Army Nurse Corps Marks 110 Years of Touching Lives," U.S. Army website, 10 February 2011.
  27. ↑ "Tompkins Square Park: Slocum Memorial Fountain," NYC Parks website. Retrieved: 18 November 2014.
  28. ↑ Robin R. Salmon, Sculpture of Brookgreen Gardens (Arcadia Publishing, 2009), p. 72.
  29. ↑ "Po'pay," United States Architect of the Capitol official website. Retrieved: 18 November 2014.
  30. ↑ Angela Wibking, "Painters' Progress," Nashville Scene, 1 August 2002. Retrieved: 18 November 2014.
  31. ↑ Plaque at the Chilhowee Park Bandstand, Knoxville, Tennessee.
  32. ↑ David Stone, Chicago's Classical Architecture: The Legacy of the White City (Arcadia Publishing, 2005), p. 95.
  33. ↑ "About the Gallery," National Gallery of Art official website. Retrieved: 31 October 2014.
  34. ↑ "Robert A. Taft Memorial and Carillon," Architect of the Capitol official website. Retrieved: 31 October 2014.
  35. ↑ "National Air and Space Museum and Udvar-Hazy Center," Smithsonian Institution Archives (online). Retrieved: 31 October 2014.
  36. ↑ United States Geological Survey, Building Stones of Our Nation's Capital: Walking Tour Stops 17-22. Retrieved: 24 November 2010.
  37. ↑ American Society of Mechanical Engineers, "The Folsom Powerhouse No. 1," National Historic Mechanical Engineering Landmark report, 12 September 1976. Retrieved: 7 November 2014.
  38. ↑ "Adriance Memorial Library," Hudson River Valley Institute, Issue 50 (Summer 2008), pp. 4-5.
  39. ↑ U.S. General Services Administration, "Old Post Office and Courthouse, Little Rock, AR," GSA.gov. Retrieved: 7 November 2014.
  40. ↑ Christopher Kenney, The McKinley Monument (The History Press, 2006), p. 54.
  41. ↑ Ronald Childress, National Register of Historic Places Registration Form for Mechanics' Bank and Trust Company Building, 18 September 1982.
  42. ↑ Ronald Childress, National Register of Historic Places Registration Form for Holston National Bank, May 10, 1979.
  43. ↑ U.S. General Services Administration, "James A. Redden U.S. Courthouse, Medford, OR, GSA.gov. Retrieved: 11 November 2014.
  44. ↑ "The Rotunda", Legislative Tour, Province of Manitoba official website. Accessed at the Internet Archive, 7 November 2014.
  45. ↑ Kevin J. Holland, Classic American Railroad Terminals (MBI Publishing, 2001), p. 151.
  46. ↑ "Wilkin County Courthouse Archived 2014-11-11 at the Wayback Machine., Minnesota Judicial Branch website. Retrieved: 11 November 2014.
  47. ↑ K.G. Donahue, "Historic Courthouse Reaches 68th Year of Service to County," Sierra Vista Herald, 1 August 2000. Retrieved: 30 October 2014.
  48. ↑ U.S. General Services Administration, "Eldon B. Mahon U.S. Courthouse, Fort Worth, TX, GSA.gov. Retrieved: 7 November 2014.
  49. ↑ Indiana War Memorial Commission, "Indiana War Memorial Museum, IN.gov. Retrieved: 7 November 2014.
  50. ↑ Michael Collins, "Newseum Showcases Tennessee Pink Marble," Knoxville News Sentinel, 12 April 2008. Retrieved: 7 November 2014.
  51. ↑ Tracy Samantha Schmidt, "A Costly Welcome for Capitol Visitors," Time, 25 May 2007.
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