Senders: Natkin, Gertrude
- Gertrude Natkin to SLC, 27 December 1905, New York, N.Y. · UCLC35123 CU-MARK
- Gertrude Natkin to SLC, 31 December 1905, New York, N.Y. · UCLC35135 CU-MARK
- Gertrude Natkin to SLC, 3 February 1906 · New York, N.Y. · UCLC35223 CU-MARK
- Gertrude Natkin to SLC, 5 February 1906 · New York, N.Y. · UCLC35228 CU-MARK
- Gertrude Natkin to SLC, 10 February 1906 · UCLC35238 CU-MARK
- Gertrude Natkin to SLC, 13 February 1906 · New York, N.Y. · UCLC35246 CU-MARK
- Gertrude Natkin to SLC, 17 February 1906 · UCLC35258 CU-MARK
- Gertrude Natkin to SLC, 22 February 1906 · UCLC35265 CU-MARK
- Gertrude Natkin to SLC, 10 March 1906 · New York, N.Y. · UCLC35307 CU-MARK
- Gertrude Natkin to SLC, 16 March 1906 · UCLC35328 CU-MARK
- Gertrude Natkin to SLC, 21 March 1906 · New York, N.Y. · UCLC35338 CU-MARK
- Gertrude Natkin to SLC, 24 March 1906 · UCLC35344 CU-MARK
- Gertrude Natkin to SLC, 16 April 1906 · New York, N.Y. · UCLC35406 CU-MARK
- Gertrude Natkin to SLC, 18 April 1906 · New York, N.Y. · UCLC35410 CU-MARK
- Gertrude Natkin to SLC, 5–8 May 1906 · UCLC35428 CU-MARK
- Gertrude Natkin and Doubleday, Page & Co. to SLC, 13 May 1906 · New York, N.Y. · UCLC35437 CU-MARK
- Gertrude Natkin to SLC, 2 July 1906 · UCLC35494 CU-MARK
- Gertrude Natkin to SLC, 30 November 1906 · UCLC35735 CU-MARK
- Gertrude Natkin to SLC, 25 December 1906 · UCLC35737 CU-MARK
- Gertrude Natkin to SLC, 14 February 1907 · UCLC35935 CU-MARK
- Gertrude Natkin to SLC, 20 February 1907 · UCLC36142 CU-MARK
- Gertrude Natkin to SLC, 30 November 1907 · UCLC37470 CU-MARK
- Gertrude Natkin to SLC, December 1909 · UCLC40361 CU-MARK
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