I have a carte-de-visite of one Alfred C. Marcy of Harrisburg PA . He appears to match Alfred born 15 Aug 1829 and was "of" Susquehanna, PA, the son of Zebulon P. Marcy and Mary called Polly Hartley. The family is posted on rootsweb.com and appears in various census on ancestry.com. There was only one possible for this Alfred on the 1880 census and it is probably him: A. Marcy born PA age 50, Musical Instrument Merchant, wife Mary b. PA age 51, children Oscar b. PA age 29, Mary b. PA age 27, Herman b. PA age 24, and Kate b. MO age 19. I have not followed them on the earlier census yet, but this is probably enough for someone to recognize their own ancestor or relation. Interested parties can email me or post here. Scans are free.