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Numismatic Bibliomania Society: Uniface impression in brass of the Adam Eckfeldt retirement medal
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Numismatic Bibliomania Society: Photographic portrait of Jacob B. Eckfeldt
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Numismatic Bibliomania Society: Watercolor portrait of Jacob R. Eckfeldt
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Numismatic Bibliomania Society: Photographic portrait of Patterson DuBois
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Numismatic Bibliomania Society: Photographic portrait of William E. DuBois