EPC to Thomas Lincoln Casey, Jr. to Emma Weir Casey, June 19, 1887

EPC to Thomas Lincoln Casey, Jr. to Thomas Lincoln Casey, October 22, 1892

Eric Bergland to Thomas Lincoln Casey, August 16, 1894

Eric Bergland to Thomas Lincoln Casey, October 18, 1881

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

Extract from the class and conduct reports, April 10, 1852

Extract from the class and conduct reports, April 7, 1851

General [A. A.] Humphreys to Thomas Lincoln Casey, January 16, 1874

General [A. A.] Humphreys to Thomas Lincoln Casey, May 17, 1873

General [A. A.] Humphreys to Thomas Lincoln Casey, September 14, 1873

General [Andrew] A. Humphreys to George W. McCrary, December 6, 1878

General [Andrew] A. Humphreys to Thomas Lincoln Casey, July 12, 1878

General [Barton S.] Alexander to Thomas Lincoln Casey, August 12, 1874

General [Barton S.] Alexander to Thomas Lincoln Casey, August 15, 1874

General [Barton S.] Alexander to Thomas Lincoln Casey, August 17, 1874

General [Barton S.] Alexander to Thomas Lincoln Casey, November 7, 1876

General [Barton] S. Alexander to Thomas Lincoln Casey, April 17, 1872

General [Barton] S. Alexander to Thomas Lincoln Casey, August 20, 1872

General [Barton] S. Alexander to Thomas Lincoln Casey, January 27, 1872

General [Barton] S. Alexander to Thomas Lincoln Casey, July 15, 1872

General [Barton] S. Alexander to Thomas Lincoln Casey, July 7, 1874

General [Barton] S. Alexander to Thomas Lincoln Casey, May 12, 1875

General [Barton] S. Alexander to Thomas Lincoln Casey, November 23, 1872

General [Barton] S. Alexander to Thomas Lincoln Casey, September 20, 1878

General [Benjamin] Alvord to Thomas Lincoln Casey, February 12, 1880

General [Benjamin] Alvord to Thomas Lincoln Casey, February 5, 1880

General [Benjamin] D. Greene to Thomas Lincoln Casey, January 11, 1871

General [Cyrus B.] Comstock to Thomas Lincoln Casey, April 23, 1870

General [Cyrus B.] Comstock to Thomas Lincoln Casey, April 26, 1875

General [Cyrus B.] Comstock to Thomas Lincoln Casey, April 27, 1875

General [Cyrus B.] Comstock to Thomas Lincoln Casey, July 23, 1875

General [Cyrus B.] Comstock to Thomas Lincoln Casey, July 31, 1875

General [Cyrus B.] Comstock to Thomas Lincoln Casey, June 5, 1876