Eric Bergland to Thomas Lincoln Casey, October 23, 1881

Error of a watch, May 19th 1851

Esther R. Elliott to Thomas Lincoln Casey, March 22, 1889

Estimate of A. D. Bishop of cost of building the obelisk, February 12, 1849

Estimate of Cost of Obelisk with Square base - 110 feet high, undated

Estimate of East Terrace, undated

Estimate to [complete] Monument, June 1, 1886

Estimated Cost of Building the Monument, March 1, 1881

Estimated Cost of Strengthening the Foundation of the Washington Natural Monument, undated

Estimates of the Superintendants and A. D. Bishop of the cost of the Obelisk, undated

Eugene Laurence to Thomas Lincoln Casey, April 10, 1888

Eugene, B. Sanges to Thomas Lincoln Casey, February 1, 1886

Eustace Gibson to Thomas Lincoln Casey, April 21, 1886

Evans to Thomas Lincoln Casey, February 7, 1870, receipt

Ewald Schmitt to Thomas Lincoln Casey, August 24, 1881

Exact levels of corners referred, undated

Executive Officer, Office of the Commsioners, D. C. to Thomas Lincoln Casey, April 6, 1895

Extract from a recent report to Hon. [Thomas] Ewing, undated, copy

Colonel [William] P. Craighill to Thomas Lincoln Casey, July 27, 1875

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