| George B. Ayres Original photographs of Abraham Lincoln published by George B. Ayres, Artist, Philadelphia. [1 of 4] n.d. Advertisement Library of Congress, Prints and Photographs Division The Alfred Whital Stern Collection of Lincolniana, Call Number/Physical Location: Portfolio 9, no. 9, Digital Id: http://hdl.loc.gov/loc.rbc/lprbscsm.scsm0483 LL/121326
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