| C.T. Sylvester (Boston, Mass.) Trade cards for C.T. Sylvester, 25 cent ambrotypes, 4 Summer Street, Boston, Mass. n.d. Trade card 2 1/2 x 2 ins Historic New England Ephemera collection, EP001, Gift of Mrs. Hill, 2 January 1923, DigitalID: 002082, AccessID: 4048, Other identifier: HNEDID-002082, GUSN 197241 LL/67749
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