Amasa M. Eaton to Thomas Lincoln Casey, July 10, 1894

Ambrose E. Burnside to Thomas Lincoln Casey, May 20, 1880

Amelia J. Rowland to Thomas Lincoln Casey, April 7, 1880

Amelia J. Rowland to Thomas Lincoln Casey, June 24, 1880

Amelia J. Rowland to Thomas Lincoln Casey, March 2, 1881

Amelia J. Rowland to Thomas Lincoln Casey, March 3, 1880

Amelia Waite to Thomas Lincoln Casey, May 10, 1889

American Geographical Society to Thomas Lincoln Casey, December 23, 1886

American Home Missionary Society to Thomas Lincoln Casey, June 17, 1858

American Society of Civil Engineers to Thomas Lincoln Casey, March 15, 1881, invitation

American Society of Civil Engineers, March 30, 1882, circulars

American Society of Engineers to Thomas Lincoln Casey, December 1, 1882, bill

Amos Perry to Thomas Lincoln Casey, October 24, 1882

Amos Stickley to Thomas Lincoln Casey, October 12, 1868

Amos Stickney to Thomas Lincoln Casey, April 10, 1889

Amos Stickney to Thomas Lincoln Casey, March 15, 1889

Amos Stickney to Thomas Lincoln Casey, May 5, 1889

An act to make contribution toward the completion of the Washington National Monument, undated [July 1872]

Anita R. Newcomb to Thomas Lincoln Casey, June 13, 1882

Anna C. W. to Emma Weir Casey, August 19, 1895

Anna C.W. to Emma Weir Casey, August 19, 1895

Anna Gould to Emma Weir Casey, December 29, 1882

Anna Gould to [Emma Weir] Casey, March 25, 1889

Anna H. Eldridge to Thomas Lincoln Casey, August 19, 1895

Anna Weir to Thomas Lincoln Casey, May 28, 1895

Anne H. Cressen to Thomas Lincoln Casey, September 21, 1895

Anne H. Cressen to Thomas Lincoln Casey, September 28, 1895

Annie B. Poland to Thomas Lincoln Casey, April 15, 1894

Annie B. Poland to Thomas Lincoln Casey, March 23, 1894, telegram

Annual Convention - American Society of Civil Engineers, May 16, 1882, program

Annual examination of cadets, June 28, 1852

Anonymous to Thomas Lincoln Casey, November 14, 1893

Appraisal of Farm, [1855]

Appropriations for Rivers and Harbors from 1866 to 1893, [January 1893]

Army and Navy Home to Thomas Lincoln Casey, March 22, 1889

Article, Philadelphia Times, December 29, 1878

Asa Bird Gardiner to Thomas Lincoln Casey, April 10, 1893

Asa Bird Gardiner to Thomas Lincoln Casey, April 30, 1874

Asa Bird Gardiner to Thomas Lincoln Casey, April 6, 1875

Asa Bird Gardiner to Thomas Lincoln Casey, December 11, 1894

Asa Bird Gardiner to Thomas Lincoln Casey, January 24, 1894

Asa Bird Gardiner to Thomas Lincoln Casey, June 21, 1892

Asa Bird Gardiner to Thomas Lincoln Casey, June 23, 1892

Asa Bird Gardiner to Thomas Lincoln Casey, May 3, 1893

Asa Bird Gardiner to Thomas Lincoln Casey, September 13, 1893 (1)

Asa Bird Gardiner to Thomas Lincoln Casey, September 13, 1893 (2)

Asa Bird Gardiner to Thomas Lincoln Casey, September 13, 1893 (3)

At the annual examination of Cadets, July 5, 1849

At the annual examination of cadets, July 5, 1851

At the sem-annual examination of cadets, January 22, 1850