The Letters of Mark Twain
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Addressees: Helmer, George J
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SLC to George J. Helmer, 21 October 1903 · Unknown place ·
UCCL11904
SLC per Isabel V. Lyon to George J. Helmer, 1 or 2 January 1907 · New York, N.Y ·
UCCL07601
SLC per Isabel V. Lyon to George J. Helmer, 24–26 February 1907 · New York, N.Y ·
UCCL07661
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