DescriptionIsaac Newton Seligman Signature.png English: Isaac Newton Seligman Signature Date 1 January 1902 Source Book: Prominent and Progressive Americans:...
DescriptionJacob Riis Signature.png English: Jacob Riis signature from the guest book of Isaac Newton Seligman at Fish Camp Date 1 January 1905 Source...
DescriptionCharles E Hughes signature.png English: From the guest book of Isaac Newton Seligman at Fish Camp Date 1 January 1909 Source Library of Congress...