Captain Davis to Thomas Lincoln Casey, November 29, 1893

Captain Earnest to Thomas Lincoln Casey, July 23, 1875

Captain Ernest to General [A. A.] Humphreys, October 20, 1870

Captain Ernest to Thomas Lincoln Casey, October 30, 1870

Captain G. J. Fiebeger to Thomas Lincoln Casey, April 13, 1893

Captain G. J. Fiebeger to Thomas Lincoln Casey, April 4, 1893

Captain G. J. Fiebeger to Thomas Lincoln Casey, December 1, 1893

Captain G. J. Fiebeger to Thomas Lincoln Casey, January 21, 1893

Captain G. J. Fiebeger to Thomas Lincoln Casey, January 24, 1893

Captain G. J. Fiebeger to Thomas Lincoln Casey, June 12, 1893

Captain G. J. Fiebeger to Thomas Lincoln Casey, June 29, 1894

Captain G. J. Fiebeger to Thomas Lincoln Casey, June 7, 1894

Captain G. J. Fiebeger to Thomas Lincoln Casey, June 9, 1894

Captain G. J. Fiebeger to Thomas Lincoln Casey, March 2, 1893

Captain G. J. Fiebeger to Thomas Lincoln Casey, March 21, 1893

Captain G. J. Fiebeger to Thomas Lincoln Casey, March 31, 1893

Captain G. J. Fiebeger to Thomas Lincoln Casey, March 4, 1893

Captain G. J. Fiebeger to Thomas Lincoln Casey, March 8, 1893

Captain G. J. Fiebeger to Thomas Lincoln Casey, May 17, 1893

Captain G. J. Fiebeger to Thomas Lincoln Casey, May 19, 1893

Captain G. J. Fiebeger to Thomas Lincoln Casey, May 20, 1893

Captain G. J. Fiebeger to Thomas Lincoln Casey, May 23, 1893

Captain G. J. Fiebeger to Thomas Lincoln Casey, May 25, 1893

Captain G. J. Lydecker to Thomas Lincoln Casey, January 6, 1874

Captain H. C. Carbaugh to Thomas Lincoln Casey, July 14, 1893

Captain H. S. Tober to Thomas Lincoln Casey, July 17, 1893

Captain H. S. Tober to Thomas Lincoln Casey, July 5, 1893

Captain Henry Hobart Bellas to Thomas Lincoln Casey, April 17, 1895

Captain J. F. Rodgers to Thomas Lincoln Casey, October 27, 1866

Captain James F. Gregory to Thomas Lincoln Casey, August 4, 1876

Captain James F. Gregory to Thomas Lincoln Casey, August 5, 1876

Captain James W. Cuyler to Thomas Lincoln Casey, December 1, 1868

Captain Jared A. Smith to Thomas Lincoln Casey, February 3, 1873

Captain Jones to Thomas Lincoln Casey, March 13, 1870

Captain M. J. Miller to Major [William P.] Craighill, October 31, 1871

Colonel [Zealous] B. Tower to Thomas Lincoln Casey, May 3, 1873

Commissioner J. A. Williamson to Thomas Lincoln Casey, July 12, 1876

Committee on Appropriations to Thomas Lincoln Casey, November 20, 1893, telegram

Committee on Appropriations to Thomas Lincoln Casey, November 24, 1893, telegram

Comparison of Estimate and Actual time taken in Cutting Pyramidion, March 18, 1885

Computations of Height, November 24, 1879

Concerning Engineer Troops by Thomas Lincoln Casey, February 21, 1874

Concrete Beams Broken, undated [December 1881]

Congress of the United States - House Resolution, March 5, 1880

Congressional Record re: Library of Congress Building

Congressional request, undated [January 1892]

Copy of Endorsements by [S. V. Benet, J.J. Laidley], June 30, 1882

Corporal O'Neill to Thomas Lincoln Casey, July 25, 1894

Corps of Cadets, September 1875

Corps of Engineers, Special Orders, November 29, 1886