Group portrait of Joseph K. Barnes and staff of surgeons at the Surgeon General's Office. Image caption on page 21 of the book US National Library of Medicine: "Joseph K. Barnes and staff of surgeons at the Surgeon General's Office, ca. 1865-1870. From left: Assistant Surgeon George Otis; Surgeon William Canfield Spencer; Assistant Surgeon General Charles Henry Crane; Assistant Surgeon Alfred Alexander Woodhull; Surgeon General Joseph K. Barnes; Assistant Surgeon Edward Curtis; Assistant Surgeon John Shaw Billings; Assistant Surgeon Joseph Janvier Woodward."
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