Senders: Hay, John M.
- John M. Hay to SLC, 9 January 1871 · New York, N.Y. · UCLC31739 CU-MARK
- John M. Hay to SLC, 14 January 1871 · New York, N.Y. · UCLC31740 CU-MARK
- John M. Hay to SLC, 25 April 1874 · New York, N.Y. · UCLC31985 CU-MARK
- John M. Hay to SLC, 16 December 1874 · New York, N.Y. · UCLC32079 CU-MARK
- John M. Hay to SLC, 15 March 1875 · New York, N.Y. · UCLC32121 CU-MARK
- John M. Hay to SLC, 16 July 1880 · Washington, D.C. · UCLC32816 CU-MARK
- John M. Hay to SLC, 11 August 1880 · Washington, D.C. · UCLC32833 CU-MARK
- John M. Hay to SLC, 16 August 1880 · Washington, D.C. · UCLC32838 CU-MARK
- John M. Hay to SLC, 26 February 1881 · Washington, D.C. · UCLC40709 CU-MARK
- John M. Hay to SLC, 31 March 1884 · Cleveland, Ohio · UCLC41952 CU-MARK
- John M. Hay to SLC, 14 April 1885 · Cleveland, Ohio · UCLC42477 RPB-JH
- John M. Hay to SLC, 28 May 1886 · Washington, D.C. · UCLC42979 CU-MARK
- John M. Hay to SLC, 19 June 1886 · Cleveland, Ohio · UCLC42987 CU-MARK
- John M. Hay to SLC, 22 July 1886 · Cleveland, Ohio · UCLC43013 CU-MARK
- John M. Hay to SLC, 22 September 1886 · Cleveland, Ohio · UCLC43063 CU-MARK
- John M. Hay to SLC, 14 February 1900 · Washington, D.C. · UCLC32929 CU-MARK
- John M. Hay to SLC, 14 March 1903 · Thomasville, Ga. · UCLC33728 CU-MARK
- John M. Hay to SLC, 7 June 1904 · Washington, D.C. · UCLC34074 CU-MARK
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