Senders: Simplified Spelling Board
- Charles P. G. Scott for Simplified Spelling Board to SLC, 29 August 1907 · New York, N.Y. · UCLC37187 CU-MARK
- Charles P. G. Scott for Simplified Spelling Board to SLC, 4 November 1908 · New York, N.Y. · UCLC38221 CU-MARK
- Charles P. G. Scott for Simplified Spelling Board to SLC, 10 November 1908 · New York, N.Y. · UCLC38245 CU-MARK
- Charles P. G. Scott for Simplified Spelling Board to SLC, 25 November 1908 · New York, N.Y. · UCLC38321 CU-MARK
- Charles P. G. Scott for Simplified Spelling Board to SLC, 2 December 1908 · New York, N.Y. · UCLC38381 CU-MARK
- Charles P. G. Scott for Simplified Spelling Board to SLC, 30 January 1909 · New York, N.Y. · UCLC38669 CU-MARK
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