D. Van Norwood to Thomas Lincoln Casey, July 2,1859

D. Van Nostrand to General A. A. Humphreys, February 28, 1876

D. Van Nostrand to General A. A. Humphreys, March 20, 1876, copy

D. Van Nostrand to Thomas Lincoln Casey, February 24, 1872

D. W. Doyle to Syford, November 27, 1878; Benet to Thomas Lincoln Casey, November 30, 1878

D. W. Flagler to Thomas Lincoln Casey, February 19, 1895

D. W. Flagler to Thomas Lincoln Casey, January 30, 1879

D. W. Flagler to Thomas Lincoln Casey, June 19, 1889

D. W. Flagler to Thomas Lincoln Casey, May 16, 1895

D. W. Lockwood to Thomas Lincoln Casey, November 8, 1870

D. W. Menamin to Thomas Lincoln Casey, July 15, 1882

D. W. Menamin to Thomas Lincoln Casey, May 12, 1882

D. W. Sabin to Thomas Lincoln Casey, April 15, 1886

D. Wyatt Aiken to Thomas Lincoln Casey, January 14, 1880

D. [illegible] O'Donoghue to Thomas Lincoln Casey, April 13, 1895

D. [illegible] O'Donoghue to Thomas Lincoln Casey, March 30, 1895

Daily Report of Services Rendered on Dedication of the Washington, Monument, February 21, 1885

Daily Report of Services Rendered on Dedication of the Washington, Monument, February 23, 1885

Daily Report of Services Rendered on Dedication of the Washington, Monument, February 24, 1885

Daily Report of Services Rendered on Dedication of the Washington, Monument, February 25, 1885

Dan C. Kingman to Thomas Lincoln Casey, May 20, 1892

Dan C. Kingman to Thomas Lincoln Casey, October 15, 1894

Daniel Ammen to Thomas Lincoln Casey, August 24, 1874

Daniel Ammen to Thomas Lincoln Casey, October 1, 1878

Daniel Hunt to John H. Caswell, June 16, 1865

Daniel Kearns to Thomas Lincoln Casey, September 15, 1894

Daniel Lamont to Thomas Lincoln Casey, April 17, 1894

Daniel S. Lamont to Thomas Lincoln Casey, April 13, 1893

Daniel S. Lamont to Thomas Lincoln Casey, August 9, 1894

Daniel S. Lamont to Thomas Lincoln Casey, December 1894 (1)

Daniel S. Lamont to Thomas Lincoln Casey, December 1894 (2)

Daniel S. Lamont to Thomas Lincoln Casey, January 19, 1894

Daniel S. Lamont to Thomas Lincoln Casey, November 11, 1893

Daniel S. Lamont to Thomas Lincoln Casey, October 5, 1893

Daniel S. Lamont to Thomas Lincoln Casey, [Daniel S. Lamont], March 18, 1895

Daniel S. Lamont, [Daniel S. Lamont], to Thomas Lincoln Casey, April 19, 1895

Darin D. Porter to Thomas Lincoln Casey, undated [1880]

Date at which accounts were sent in [Washington Monument], undated

David Fitzgerald to Thomas Lincoln Casey, December 28, 1882

David G. Haskins Jr. to Thomas Lincoln Casey, March 18, 1882

David G. Haskins, Jr. to Thomas Lincoln Casey, December 28, 1886

David G. Haskins, Jr. to Thomas Lincoln Casey, February 13, 1894

David G. Haskins, Jr. to Thomas Lincoln Casey, October 30, 1886

David Greene Haskins, Jr. to Thomas Lincoln Casey, May 12, 1893 (1)

David Greene Haskins, Jr. to Thomas Lincoln Casey, May 12, 1893 (2)

David Haskins Jr. to Thomas Lincoln Casey, November 16, 1886

David P. Heap to Thomas Lincoln Casey, April 3, 1886

David P. Heap to Thomas Lincoln Casey, October 25, 1886

David S. Stanley, U. S. Soldiers' Home to Thomas Lincoln Casey, November 20, 1893

Charles F. Benjamin to Thomas Lincoln Casey, February 15, 1872