Robert [Todd] Lincoln to Thomas Lincoln Casey, December 17, 1881

Robert [W.] Weir to Thomas Lincoln Casey, March 22, 1888

Robertson & Blackford to Thomas Lincoln Casey, February 1, 1888

Roger Jones to Thomas Lincoln Casey, July 5, 1878

Rooms of the American Home Missionary Society to Thomas Lincoln Casey, January 23, 1856

Rosa Wright Smith to Thomas Lincoln Casey, July 14, 1894

Roster of Engineers, August 1, 1894, (1)

Roster of Engineers, August 1, 1894, (2)

Roster of Engineers, August 1, 1894, (3)

Rough draft of notes for Memorandum in [illegible] Report, undated

Rough draft of original report on monument, July 27, 1878

Rough of Second Report on Monument Completed, December 13, 1886

Rufus D. Bean to Thomas Lincoln Casey, August 16, 1871

Rufus E. Lister to Thomas Lincoln Casey, February 2, 1894

Rufus Naple to Thomas Lincoln Casey, May 1, 1886, General Lewis Hunt, copy, May 16, 1886

Russell Sage to Thomas Lincoln Casey, April 24, 1886

Rutherford B. Hayes to Thomas Lincoln Casey, undated [November 1878]

S. Anna Gould to Thomas Lincoln Casey, April 5, 1886

S. B. Elkins to Thomas Lincoln Casey, calling card; May, 1892

S. B. Elkins to Thomas Lincoln Casey, May 27, 1892

S. D. Larnill to Capt. [George] W. Davis, February 24, 1881

S. D. Miller to Mr. Warren, February 13, 1893

S. E. Tillman to Thomas Lincoln Casey, December 18, 1882

S. E. Tillman to Thomas Lincoln Casey, June 11, 1872

S. Fannie Briggs to Thomas Lincoln Casey, undated [1880]

S. H. Hacker to Thomas Lincoln Casey, June 21, 1882

S. H. Kauffmann to Thomas Lincoln Casey, June 10, 1882

S. M. Mansfield to Thomas Lincoln Casey, June 27, 1894

S. P. Langley to Thomas Lincoln Casey, May 18, 1893

S. Polaud to Thomas Lincoln Casey, February 25, 1889

S. Polaud to Thomas Lincoln Casey, February 9, 1889

S. Q. C. Lamar to General Humphrey, February 2, 1876

S. V. Benet to Thomas Lincoln Casey, December 1870

S. V. Benet to Thomas Lincoln Casey, June 1871

Sadie Gould to Thomas Lincoln Casey, September 2, 1882

Sadie L. Gould to Thomas Lincoln Casey, February 1, 1882

Sam Randall to Thomas Lincoln Casey, April 12, 1875 (1)

Sam Randall to Thomas Lincoln Casey, April 12, 1875 (2)

Sam Randall to Thomas Lincoln Casey, February 8, 1889

Samuel C. Cobb to Thomas Lincoln Casey, February 22, 1882

Samuel C. Cobb to Thomas Lincoln Casey, February 24, 1882

Samuel C. Cobb to Thomas Lincoln Casey. February 20, 1882

Samuel M. Matson to Thomas Lincoln Casey, May 17, 1856

Samuel Pierce Clark to Thomas Lincoln Casey, January 4, 1856

Samuel Ward Green to Thomas Lincoln Caseye, May 21, 1895

Samuel Ward Greene to Thomas Lincoln Casey, August 18, 1882

Sarah Burlingame Webster to Thomas Lincoln Casey, June 15, 1895

Sarah Burlingame Webster to Thomas Lincoln Casey, June 26, 1895

Sarah N. Barnswell, undated [1882]

Sarah N. Randolph to Thomas Lincoln Casey, May 12, 1882, telegram