Malone Whiliss to Thomas Lincoln Casey, May 31, 1882

Manning to Thomas Lincoln Casey, April 20, 1886

Manuscript, Treasury Department to Thomas Lincoln Casey, February 24, 1894

Marble + Granite in Shaft, undated

Marble Cutter Contract, McClellan, undated

Marcus Benjamin to Thomas Lincoln Casey, June 20, 1889

Maria L. Potter to Thomas Lincoln Casey, October 24, 1886

Maria Laurence to Thomas Lincoln Casey, February 14, 1888

Maria Weir to Thomas Lincoln Casey, November 22, 1886

Marshall to Thomas Lincoln Casey, December 12, 1895, copy (1)

Marshall to Thomas Lincoln Casey, December 12, 1895, copy (2)

Mary B. Hunt to Thomas Lincoln Casey, January 22, 1894

Mary C. Deutschendorff to Thomas Lincoln Casey, November 22, 1895

Mary Casey and Louisa Casey to Thomas Lincoln Casey, June 25 and June 27, 1856

Mary Casey to Thomas Lincoln Casey, April 17, 1858

Mary Casey to Thomas Lincoln Casey, April 28, 1856

Mary Casey to Thomas Lincoln Casey, July 23, 1856

Mary Casey to Thomas Lincoln Casey, Louisa Casey, January 20, 1856

Mary Casey to Thomas Lincoln Casey, October 18, 1856

Mary Casey to Thomas Lincoln Casey, October 3, 1856

Mary Casey, August 18, 1858, check

Mary D. Steele to Thomas Lincoln Casey, February 15, 1888

Mary D. Steele to Thomas Lincoln Casey, February 8, 1888

Mary D. Steele to Thomas Lincoln Casey, January 31, 1888

Mary E. Craigle to Admiral Silas Casey, September 14, 1895

Mary E. Wickham Kellogg to Thomas Lincoln Casey, July 31, 1895

Mary Elizabeth Wickham Kellogg to Thomas Lincoln Casey, May 21, 1895

Mary L. Cummings to Thomas Lincoln Casey, January 26, 1892, telegram

Mary L. Gould to Thomas Lincoln Casey, October 18, 1886

Mary L. Gould to Thomas Lincoln Casey, October 5, 1886

Mary L. Gould to Thomas Lincoln Casey, September 26, 1886

Mary S. Logan to Thomas Lincoln Casey, February 19, 1880

Mary T. Babcock to Thomas Lincoln Casey, February 4, 1882

Mary T. Babcock to Thomas Lincoln Casey, January 12, 1882

Mary T. Robert to General Silas Casey, January 14, 1881

Mary T. Robert to General Silas Casey, May 25, 1881

Mary Wickham Kellogg to Thomas Lincoln Casey, April 30, 1895

Mary [Townsend] Babcock to Thomas Lincoln Casey, October 7, 1880

Massachusetts Society of the Cincinnati to Thomas Lincoln Casey, December 5, 1893

Massachusetts Society of the Cincinnati to Thomas Lincoln Casey, February 20, 1893

Massachusetts Society of the Cincinnati to Thomas Lincoln Casey, February 24, 1894, announcement

Massachusetts Society of the Cincinnati to Thomas Lincoln Casey, February 27, 1892

Massachusetts Society of the Cincinnati to Thomas Lincoln Casey, October 23, 1893

Material for Roof, undated

Materials received + Services Rendered for Dedication of [Monument], February 21, 1885

Materials received + Services Rendered for Dedication of [Monument], July 21, 1885

Mathematical/Accounting notes, [April 1866]

Matilda Casey to Thomas Lincoln Casey, August 1, 1893

Matilda Casey to Thomas Lincoln Casey, February 8, 1886

N. W. Harris & Company Bankers to Thomas Lincoln Casey, October 26, 1893