Sources: IaU
- George L. Fall to SLC, 27 October 1869, Boston, Mass. · UCLC31672 IaU
- James Redpath to SLC, 28 October 1869, Boston, Mass. · UCLC31673 IaU
- James Redpath to SLC, 1 November 1869, Boston, Mass. · UCLC31674 IaU
- George L. Fall to SLC, 25 November 1869, Boston, Mass. · UCLC31943 IaU
- James Redpath to SLC, 30 November 1869, Boston, Mass. · UCLC31944 IaU
- James Redpath to SLC, 4 December 1869, Boston, Mass. · UCLC31945 IaU
- George L. Fall to SLC, 7 December 1869 ∙ 1st of 2 ∙ Boston, Mass. · UCLC31947 IaU
- George L. Fall to SLC ∙ 7 December 1869 ∙ 2nd of 2 ∙ Boston, Mass. · UCLC51048 IaU
- Samuel L. Clemens to James Redpath, 17 January 1872 · Lock Haven or Milton, Pa · UCCL00719 IaU
- George L. Fall for Redpath & Fall to SLC, 16 January 1873 · Boston, Mass. · UCLC31849 IaU
- SLC to Robert H. Moore, 3 December 1886 · Hartford, Conn · UCCL03490 IaU
- SLC to Unidentified, 29 August 1887 · Hartford, Conn · UCCL03636 IaU
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