Ellen Espy [illegible] to Thomas Lincoln Casey, March 21, 1894

Ellen Ewing Sherman to Thomas Lincoln Casey, April 28, 1880

Ellen R. Elliot to Thomas Lincoln Casey, March 18, 1895

Ellen R. Elliot to Thomas Lincoln Casey, May 20, 1893 (1)

Colonel [William] P. Craighill to Thomas Lincoln Casey, June 30, 1875

Colonel [William] P. Craighill to Thomas Lincoln Casey, March 18, 1875

Colonel [William] P. Craighill to Thomas Lincoln Casey, March 21, 1873

Colonel [William] P. Craighill to Thomas Lincoln Casey, May 14, 1874

Colonel [William] P. Craighill to Thomas Lincoln Casey, May 26, 1875

Colonel [William] P. Craighill to Thomas Lincoln Casey, November 16, 1874

Colonel [William] P. Craighill to Thomas Lincoln Casey, November 5, 1875

Colonel [William] P. Craighill to Thomas Lincoln Casey, October 15, 1872 (1)

Colonel [William] P. Craighill to Thomas Lincoln Casey, October 15, 1872 (2)

Colonel [William] P. Craighill to Thomas Lincoln Casey, October 17, 1872

Colonel [William] P. Craighill to Thomas Lincoln Casey, October 21, 1873

Colonel [William] P. Craighill to Thomas Lincoln Casey, October 9, 1875

Colonel [William] P. Craighill to Thomas Lincoln Casey, September 28, 1875

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

Cost of heating Apparatus in Public Buildings, undated [1893]

Cottrell & Bryer to John H. Caswell May 15, 1865

Court of Claims, Albert B. Mullett v. The United States, May 4, 1889

Creamer to Thomas Lincoln Casey, October 29, 1895

Cross Section of Strata under Monument, undated

Cubic feet of Marble, undated

D. B. Culberson to Thomas Lincoln Casey, February 11, 1893, telegram

D. C. Houston to Thomas Lincoln Casey, January 26, 1889

D. C. Houston to Thomas Lincoln Casey, May 21, 1892

D. Gardiner Tyler to Thomas Lincoln Casey, April 13, 1894

D. Garrison to Thomas Lincoln Casey, April 18, 1876

D. H. Remington to Thomas Lincoln Casey, July 12, 1893

D. H. Remington to Thomas Lincoln Casey, June 30, 1893

D. M. Rhodes to [an unknown cousin], May 6, 1880

D. McMenamin to Thomas Lincoln Casey, February 23, 1881

D. McMenamin visiting card, undated [1882]

D. Moses to Thomas Lincoln Casey, February 23, 1871

D. P. Heap to Thomas Lincoln Casey, December 9, 1886