Senders: Gebbie, George
- George Gebbie to SLC, 14 July 1880 · Philadelphia, Pa. · UCLC32811 CU-MARK
- George Gebbie to SLC, 17 July 1880 · Philadelphia, Pa. · UCLC32818 CU-MARK
- George Gebbie to SLC, 17–19 July 1880 · Philadelphia, Pa. · UCLC32821 CU-MARK
- George Gebbie to SLC, 23 October 1880 · Philadelphia, Pa. · UCLC33366 CU-MARK
- George Gebbie to SLC, 29 October 1880 · Philadelphia, Pa. · UCLC32868 CU-MARK
- George Gebbie to Samuel L. Clemens, 12 January 1881 · Philadelphia, Pa. · UCLC40671 CU-MARK
- George Gebbie to SLC, 29 January 1881 · Philadelphia, Pa. · UCLC40688 CU-MARK
- George Gebbie to SLC, 20 October 1882 · Philadelphia, Pa. · UCLC41355 CU-MARK
- George Gebbie to SLC, 7 August 1884 · Philadelphia, Pa. · UCLC42241 CU-MARK
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