Thomas Lincoln Casey to [Robert Todd Lincoln], July 18, 1881, draft

Thomas Lincoln Casey to [Samuel] C. Cobb, February 17, 1882, copy

Thomas Lincoln Casey to [Ulysses S. Grant], January 15, 1875, copy; Thomas Lincoln Casey to [William W. Belknap], January 11, 1875, copy

Thomas Lincoln Casey to [unknown] Captain, June 26, 1888, copy

Thomas Lincoln Casey to [unknown] General, July 2, 1872

Thomas Lincoln Casey to [unknown] June 26, 1888, copy

Thomas Lincoln Casey to [William P.] Craighill, undated [July 11, 1881], draft

Thomas Lincoln Casey to [William Wilson] Corcoran, undated, draft

Thomas Lincoln Casey to [William] D. Washburn, January 27, 1894

Thomas Lincoln Casey to [William] P. Craighill, March 4, 1892, copy

Thomas Lincoln Casey to [William] T. Barnard, March 6, 1876, draft

Thomas Lincoln Casey, copy of endorsement on Earth bids, December 11, 1886

Thomas Lincoln Casey, February 6, 1876; February 7, 1876

Thomas Lincoln Casey, First proof of Journey, January 10, 1874

Thomas Lincoln Casey, Heights of various structures, 1882

Thomas Lincoln Casey, Jr. Report, December 23, 1878

Thomas Lincoln Casey, Jr. Report, November 22, 1878

Thomas Lincoln Casey, Jr. to Emma Weir Casey March 11, 1888

Thomas Lincoln Casey, Jr. to Emma Weir Casey, April 1, 1883

Thomas Lincoln Casey, Jr. to Emma Weir Casey, April 13, 1879

Thomas Lincoln Casey, Jr. to Emma Weir Casey, April 15, 1877; HD Wilson to Casey, April 13, 1877

Thomas Lincoln Casey, Jr. to Emma Weir Casey, April 15, 1892

Thomas Lincoln Casey, Jr. to Emma Weir Casey, April 17, 1881

Thomas Lincoln Casey, Jr. to Emma Weir Casey, April 18, 1880

Thomas Lincoln Casey, Jr. to Emma Weir Casey, April 19, 1882

Thomas Lincoln Casey to General Silas Casey, September 18, 1872

Thomas Lincoln Casey to General Silas Casey, September 2, 1873

Thomas Lincoln Casey to General Silas Casey, September 2, 1878

Thomas Lincoln Casey to General Silas Casey, September 20, 1847

Thomas Lincoln Casey to General Silas Casey, September 20, 1859

Thomas Lincoln Casey to General Silas Casey, September 23, 1864

Thomas Lincoln Casey to General Silas Casey, September 24, 1862

Thomas Lincoln Casey to General Silas Casey, September 25, 1867

Thomas Lincoln Casey to General Silas Casey, September 29, 1881

Thomas Lincoln Casey to General Silas Casey, September 30, 1866

Thomas Lincoln Casey to General Silas Casey, September 30, 1872

Thomas Lincoln Casey to General Silas Casey, September 4, 1858

Thomas Lincoln Casey to General Silas Casey, September 5, 1866

Thomas Lincoln Casey to General Silas Casey, September 6, 1876

Thomas Lincoln Casey to General [John N.] Schofield, December 1, 1886, draft

Thomas Lincoln Casey to General [John] Newton, January 12, 1883, copy

Thomas Lincoln Casey to General [John] Newton, January 3, 1883

Thomas Lincoln Casey to General [Orlando M.] Poe, undated [February 1882]

Thomas Lincoln Casey to George W. McCrary, August 11, 1881, draft

Thomas Lincoln Casey to George W. Steele, April 9, 1886, draft

Thomas Lincoln Casey to Goldburgh, 1873

Thomas Lincoln Casey to Gouverneur K. Warren, July 3, 1874

Thomas Lincoln Casey to H. H. Bingham, January 30, 1895, copy

Thomas Lincoln Casey to Hatcher, undated [1878]

Thomas Lincoln Casey to Henry C. Murphy, November 29, 1882, copy