Addressees: Allen, William H
- SLC to William H. Allen, 22 December 1909 · Redding, Conn · UCCL11793
- Albert Bigelow Paine to William H. Allen, 1 January–29 April 1910, Redding, Conn · UCCL09479
- Albert B. Paine for SLC to William H. Allen, 3 January 1910 · Redding, Connecticut · UCCL13056
- Albert Bigelow Paine for SLC to William H. Allen per Telegraph Operator, 5 January 1910 · New York, New York · UCCL13057
- Clara L. Clemens to William H. Allen, 5 April 1910 · Wiesbaden, Germany · UCCL08578
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