James C. Sanders to Thomas Lincoln Casey, April 15, 1879

James C. Sanders to Thomas Lincoln Casey, December 6, 1879

James Clark to Thomas Lincoln Casey, April 25, 1878

James Eveleth to Thomas Lincoln Casey, January 10, 1879

James F. Gregory to Thomas Lincoln Casey, December 2, 1889 (1)

James F. Gregory to Thomas Lincoln Casey, December 2, 1889 (2)

James F. Gregory to Thomas Lincoln Casey, December 5, 1889

James F. Gregory to Thomas Lincoln Casey, July 23, 1890

James F. Gregory to Thomas Lincoln Casey, July 7, 1890

James F. Gregory to Thomas Lincoln Casey, November 17, 1890

James F. Gregory to Thomas Lincoln Casey, November 27, 1883

James F. Gregory to Thomas Lincoln Casey, October 11, 1889

James F. Gregory to Thomas Lincoln Casey, September 15, 1890

James G. Berret to Thomas Lincoln Casey, December 15, 1892

James G. Courts to Thomas Lincoln Casey, March 15, 1878

James G. Hill to Thomas Lincoln Casey, June 17, 1879

James Gregory to Thomas Lincoln Casey, July 11, 1888

James Gregory to Thomas Lincoln Casey, November 2, 1889

James Hall to Thomas Lincoln Casey, July 7, 1888

James K. Jones to Thomas Lincoln Casey, July 28, 1892

James M. Bugbee to Thomas Lincoln Casey, December 7, 1889

James McKenna to Thomas Lincoln Casey, February 3, 1885

James McQueen to Thomas Lincoln Casey, July 1, 1877

James Middleditt to Thomas Lincoln Casey, July 9, 1888

John B. Pierce to Thomas Lincoln Casey, February 9, 1884

John B. Pierce to Thomas Lincoln Casey, January 29, 1884

John Beattie to Col. D.C. Houston, January 31, 1891

John Bogart to Thomas Lincoln Casey, April 16, 1890

John Bogart to Thomas Lincoln Casey, December 3, 1885

John Bogart to Thomas Lincoln Casey, February 18, 1885

John Bogart to Thomas Lincoln Casey, January 5, 1883

John Bogart to Thomas Lincoln Casey, June 26, 1884

John Bogart to Thomas Lincoln Casey, March 27, 1885

John Bogart, American Society of Civil Engineers to Thomas Lincoln Casey, March 20, 1884

John C. Goodridge to W. W. Corcoran, February 10, 1885, copy

John C. Houk to Thomas Lincoln Casey, January 23, 1893; John C. Houk to T. S. Godfrey, January 21, 1893 [copy]; John Houk to Stephen D. Elkins, undated [transcription]

John C. Houk to [Stephen] B. Elkins, January 16, 1893

John C. Houk to [Stephen] B. Elkins, January 21, 1893 (1)

John C. Houk to [Stephen] B. Elkins, January 21, 1893 (2)

John C. Tidbull to Thomas Lincoln Casey, October 24, 1889

John Campbell Harris to Thomas Lincoln Casey, March 6, 1891

John Dickinson to General Bennett, November 10, 1887, copy

John Eaton to Thomas Lincoln Casey, February 4, 1885

John Eaton to Thomas Lincoln Casey, January 19, 1891

John Elliott to Thomas Lincoln Casey, September 22, 1884

John Ely Bready to Thomas Lincoln Casey, February 20, 1896

John F. Weir to Emma [Weir Casey], January 9, 1891

John F. Weir to Emma, March 14, 1890; Thomas Lincoln Casey to John, undated

John F. Weir to Thomas Lincoln Casey, December 18, 1885

John F. Weir to Thomas Lincoln Casey, February 2, 1887