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104 South Fifth Street Philadelphia, U. S. A. The American Philosophical Society acknowledges with thanks the receipt of your ^[[ms. on the Classification of the Cetacea]] Very respectfully yours ^[[I. Minis Hays - Sec'y]] Philadelphia ^[[July 15, 1908]]
Transcription Notes:
The signature is most likely that of Isaac Minis Hays, secretary of the APS at the time.