Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to [John] G. Barnard, June 7, 1871 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to [John] G. Barnard, June 9, 1871; Thomas Lincoln Casey to [John] G. Barnard, June 15, 1871 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to A. A. Humphreys, March 11, 1876 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to A. A. Humphreys, May 5, 1874 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to A. A. Humphreys, September 28, 1871 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to A. A. Humphreys, undated Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to Bell, July 8, 1874 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to Benjamin Bristow, June 30, 1874 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to Cleveland Abbe, December 31, 1873 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to D. Van Nostrand, March 4, 1876 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to Frederick A. Mahan, October 6, 1871 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to General Henry [illible], April 17, 1876 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to General [illegible], January 15, 1872 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to General [illegible], June 27, 1871 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to George W. Prentiss, October 13, 1874 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to Henry J. Hunt, August 28, 1871 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to Henry J. Hunt, August 3, 1871 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to Howell, February 4, 1876 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to J. B. Sanders, July 23, 1874 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to John F. McGlensey, October 28, 1876 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to John R. Ackermann, April 19, 1872 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to Ladd, December 21, 1875 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to Lee, July 24, 1874 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to Louis De Witt, July 13, 1871 Thomas Lincoln Casey Letterbook (1871-1877), Thomas Lincoln Casey to Louis De Witt, July 5, 1871 Thomas J. Gould to Thomas Lincoln Casey, March 1, 1886 Thomas J. Gould to Thomas Lincoln Casey, March 22, 1886 Thomas J. Gould to Thomas Lincoln Casey, March 26, 1886 Thomas J. Gould to Thomas Lincoln Casey, March 5, 1886 Thomas J. Haynes to Major Samuel Wood, January 31, 1866, copy Thomas J. Peirce to Thomas Lincoln Casey, June 3, 1889 Thomas L. Gould to Thomas Lincoln Casey, May 18, 1875 Thomas Lincoln Casey to Colonel George H. Elliot, June 1870 Thomas Lincoln Casey to Rufus E. Lester, February 5, 1892, copy of telegram Thomas Lincoln Casey - Accounts, March 7, 1882 Thomas Lincoln Casey - Angle calculations and sketches, undated Thomas Lincoln Casey - Calculations, January 20, 1878 Thomas Lincoln Casey - Calculations, undated Thomas Lincoln Casey - Copy of Inventory and Appraisement of Estate of General Silas Casey, March 6, 1882 Thomas Lincoln Casey - Crane calculations, sketch, undated (1) Thomas Lincoln Casey - Crane calculations, sketch, undated (2) Thomas Lincoln Casey - Crane calculations, sketch, undated (3) Thomas Lincoln Casey - Crane calculations, sketch, undated (4) Thomas Lincoln Casey - Crane calculations, sketch, undated (5) Thomas Lincoln Casey - Estimations, undated Thomas Lincoln Casey - Math Notes, undated Thomas Lincoln Casey - Math Notes, undated (2) Thomas Lincoln Casey - Memorandum concerning Washington Monument Colunade, undated Thomas Lincoln Casey - Memorandum concerning Washington Monument, undated Thomas Lincoln Casey - Memorandum of Clay, undated
