Addressees: Bangs, John Kendrick
- SLC to John K. Bangs, 1–12 March 1899 · Vienna, Austria · UCCL05600 NN-BGC
- SLC to John K. Bangs, 27 April 1899 · Vienna, Austria · UCCL05208
- SLC to John K. Bangs, 22 October 1900 · New York, N.Y · UCCL05882 WU-MU
- SLC to John K. Bangs, 20 November 1900 · New York, N.Y · UCCL05911 NNC
- SLC to John K. Bangs, 9 January 1902 · Riverdale, N.Y · UCCL06228 CU-MARK
- SLC to John K. Bangs, 28 November 1902 · New York, N.Y · UCCL12470
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