Addressees: Osborne, Duffield
- SLC per Isabel V. Lyon to Duffield Osborne for The Authors Club, 24 January 1906 · New York, N.Y · UCCL12132 CU-MARK
- SLC to Duffield Osborne for The Authors Club, 31 January 1906 · New York, N.Y · UCCL07320 CU-MARK
- SLC per Isabel V. Lyon to Duffield Osborne, 19 March 1906 · New York, N.Y · UCCL07391 CU-MARK
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