Charles S. Wheeler to Thomas Lincoln Casey, February 28, 1881 Charles Tracey to Thomas Lincoln Casey, April 4, 1893 Charles Tracy to Thomas Lincoln Casey, October 14, 1894 Charles W. Jones to Thomas Lincoln Casey, February 2, 1880 Charles Weir to Thomas Lincoln Casey, December 22, 1894 Charles Weir to Thomas Lincoln Casey, January 20, 1892 Charles Weir to Thomas Lincoln Casey, March 15, 1895 Chase, Tinkham & Co. to Thomas Lincoln Casey, July 13, 1872 Check, General Silas Casey, July 25, 1858 Check, General Silas Casey, July 6, 1858 Christopher P. Peirce to Thomas Lincoln Casey, September 28, 1895 Circular of State Dept. to unknown, February 21, 1881 City of New York Department of Docks to Thomas Lincoln Casey, December 12, 1895 Clara Derby to Thomas Lincoln Casey, November 23, 1894; envelope Clara Derby to Thomas Lincoln Casey, October 18, 1894 Clara Derby to Thomas Lincoln Casey, October 21, 1894 Clare [illegible] to Thomas Lincoln Casey, undated [1880] Clarence King to Thomas Lincoln Casey, April 8, 1892 Clarence King to Thomas Lincoln Casey, February 3, 1871 Clarence S. King to Thomas Lincoln Casey, October 23, 1893 Clement Weaver to Thomas Lincoln Casey, April 4, 1892 Cleveland Abbe to Thomas Lincoln Casey, January 12, 1882 Cleveland Abbe to Thomas Lincoln Casey, undated [January 1881] Clinton B. Sears to Thomas Lincoln Casey, June 18, 1889 Clinton B. Sears, Special Orders, April 26, 1888 Clinton B. Sears, Special Orders, June 13, 1888 Clinton B. Sears, Special Orders, June 15, 1888 Clinton B. Sears, Special Orders, June 19, 1888 Clinton B. Sears, Special Orders, June 25, 1888 Clinton B. Sears, Special Orders, May 10, 1888 Clinton B. Sears, Special Orders, May 2, 1888 Clinton B. Sears, Special Orders, May 21, 1888 Clinton B. Sears, Special Orders, May 4, 1888 Clinton B. Sears, Special Orders, May 9, 1888 Coal Consumption in Public Buildings, undated [1893] Col. A. F. Rockwell to Thomas Lincoln Casey, November 11, 1880 Col. Ludlow to Thomas Lincoln Casey, June 22, 1888 Col. William Ludlow to Thomas Lincoln Casey, June 29, 1888 Col. Wood to Thomas Lincoln Casey, November 23, 1886 Col. [William] C. Church to Thomas Lincoln Casey, June 20, 1888 Col. [William] Ludlow to Thomas Lincoln Casey, June 22, 1888 Collingwood to Thomas Lincoln Casey , December 29, 1886 Colonel A. A. Humphreys to Thomas Lincoln Casey, April 20, 1870 Colonel A. Piper to Thomas Lincoln Casey, September 30, 1878 Colonel Asa Bird Gardner to Thomas Lincoln Casey, April 13, 1875 Colonel Benet to Thomas Lincoln Casey, December 1875 Colonel Bleddyn Powell to Thomas Lincoln Casey, April 11, 1894 Colonel C. Seaforth Stewart to Thomas Lincoln Casey, February 24, 1875 Colonel C. Seaforth Stewart to Thomas Lincoln Casey, July 6, 1868 Captain [James W.] Cuyler to Thomas Lincoln Casey, June 23, 1875