Senders: Gilder, Richard Watson
- Richard W. Gilder to SLC, 2 March 1882 · New York, N.Y. · UCLC41051 CU-MARK
- Richard W. Gilder to SLC, 24 March 1882 · New York, N.Y. · UCLC41093 CU-MARK
- Richard W. Gilder for Century Magazine to SLC, 15 October 1883 · New York, N.Y. · UCLC41663 CU-MARK
- Richard W. Gilder to SLC, 6 April 1884 · New York, N.Y. · UCLC42004 CU-MARK
- Richard W. Gilder to SLC, 16 April 1884 · New York, N.Y. · UCLC42011 CU-MARK
- Richard W. Gilder to SLC, 24 April 1884 · New York, N.Y. · UCLC42022 CU-MARK
- Richard W. Gilder to SLC, 9 March 1886 · New York, N.Y. · UCLC42894 CU-MARK
- Richard W. Gilder to SLC, 22 March 1889 · New York, N.Y. · UCLC44447 CU-MARK
- Richard W. Gilder to SLC, 27 March 1889 · New York, N.Y. · UCLC44453 CU-MARK
- Richard W. Gilder to SLC, 16 August 1889 · New York, N.Y. · UCLC44636 CU-MARK
- Richard W. Gilder to SLC, 8 October 1889 · New York, N.Y. · UCLC44701 NN
- Richard W. Gilder to SLC, 6 November 1889 · New York, N.Y. · UCLC44749 CU-MARK
- Richard W. Gilder to SLC, 18 February 1899 · UCLC46223 NN
- Richard W. Gilder to SLC, 14 November 1900 · New York, N.Y. · UCLC32991 CU-MARK
- Richard Watson Gilder, Robert U. Johnson and Clarence Buel to SLC, 30 November 1900 · UCLC50428 Me4
- Richard W. Gilder to SLC, 5 December 1902 · UCLC34862 NN
- Richard W. Gilder to SLC, 4 August 1903 · New York, N.Y. · UCLC33810 NN
- Richard W. Gilder to SLC, 22 August 1905 · New York, N.Y. · UCLC34586 CU-MARK
- Richard W. Gilder to SLC, 22 September 1905 · UCLC34649 NN
- Richard W. Gilder to SLC, 3 March 1906 · New York, N.Y. · UCLC35285 CU-MARK
- Richard W. Gilder to SLC, 28 April 1908 · UCLC37778 NN
- Richard W. Gilder to SLC, 10 January 1909 · Aurora, N.Y. · UCLC38589 CU-MARK
- Richard Warson Gilder to SLC, Unknown date, Unknown place · UCLC42964 Gilder 1916
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