Thomas Barr to Thomas Lincoln Casey, June 30, 1884

Thomas C. Catchings to Thomas Lincoln Casey, November 2, 1889

Thomas C. Greene to Emma Casey, May 27, 1884

Thomas C. Greene to Thomas Lincoln Casey, January 9, 1891

Thomas Coggeshall to Thomas Lincoln Casey, July 11, 1888

Thomas F. Millett to Thomas Lincoln Casey, September 29, 1890; Thomas Lincoln Casey to Thomas F. Millett, undated

Thomas Greene to Thomas Lincoln Casey, April 8, 1884

Thomas Greene to Thomas Lincoln Casey, August 7, 1885

Thomas Greene to Thomas Lincoln Casey, August 9, 1885

Thomas Greene to Thomas Lincoln Casey, February 2, 1885

Thomas Greene to Thomas Lincoln Casey, July 11, 1888

Thomas Greene to Thomas Lincoln Casey, May 6, 1887

Thomas Greene to Thomas Lincoln Casey, September 11, 1883

Thomas Harvey to Thomas Lincoln Casey, December 24, 1869 (1)

Thomas Harvey to Thomas Lincoln Casey, December 24, 1869 (2)

Thomas Harvey to Thomas Lincoln Casey, December 31, 1869

Thomas Harvey to Thomas Lincoln Casey, January 3, 1869

Thomas Harvey to Thomas Lincoln Casey, November 16, 1869

Thomas Harvey to Thomas Lincoln Casey, November 9, 1869

Thomas Harvey to Thomas Lincoln Casey, October 16, 1869 (1)

Thomas Harvey to Thomas Lincoln Casey, October 16, 1869 (2)

Thomas Harvey to Thomas Lincoln Casey, October 5, 1869 (1)

Thomas Harvey to Thomas Lincoln Casey, October 5, 1869 (2)

Thomas J. Gould to Thomas Lincoln Casey, December 15, 1883

Thomas J. Gould to Thomas Lincoln Casey, February 10, 1883

Thomas J. Gould to Thomas Lincoln Casey, November 14, 1888

Thomas J. Gould to Thomas Lincoln Casey, November 21, 1887

Thomas J. Gould to Thomas Lincoln Casey, October 20, 1884

Thomas J. Gould to Thomas Lincoln Casey, September 20, 1884

Thomas J. Peirce to Thomas Lincoln Casey, March 21, 1885

Thomas L. Gould to Thomas Lincoln Casey, January 23, 1885

Thomas Lincoln Casey - Water levels in January 1871, undated

Thomas Lincoln Casey - Notes made at Buffalo, June 14, 1887

Thomas Lincoln Casey Calculations - Cellar, basement, sub-basement stone measurements, undated [1882-1884]

Thomas Lincoln Casey Calculations - North and West Wings, undated [1882-1884]

Thomas Lincoln Casey draft of letter to Secretary of War, Stephen Benton Elkins, August 12, 1892

Thomas Lincoln Casey drafts, undated [August 1892]

Thomas Lincoln Casey Jr. Report, January 18, 1879

Thomas Lincoln Casey Jr. to Thomas Lincoln Casey, April 18, 1883

Thomas Lincoln Casey Memorandum - Balance of Appropriation available for Completion of Washington Monument, December 8, 1883

Thomas Lincoln Casey Memorandum - Levels of foot of buttresses and foot of monument, July 5, 1883

Thomas Lincoln Casey Memorandum - untitled notes, undated [July 1883]

Thomas Lincoln Casey Memorandum, August 22, 1888

Thomas Lincoln Casey Memorandum, August 27, 1889, draft

Thomas Lincoln Casey Notebook Excerpt, June 29-July 12, 1889

Thomas Lincoln Casey Notes - Draft of Inscription, undated

Thomas Lincoln Casey Notes - Heights of the Spires of Cathedral of Cologne and Stasburgh Cathedral, undated [1882-1884]

Thomas Lincoln Casey notes - J. W. Thompson on order, undated [1885]

Thomas Lincoln Casey Notes - Washington Monument Society [1890]

Thomas Lincoln Casey Notes - [Arc de Tromphe], undated