McAleer, William. Philadelphia, Pa., 20 July 1899

This collection of Michael O'Hara's correspondence documents his professional career as a surgeon. The collection is divided into three series. Series 1 contains manuscript and typescript

correspondence, 1898-1899, principally addressed to George M. Sternberg, Surgeon General of the United States, from Philadelphia physicians and other influential figures, such as Senator Boies Penrose. These letters are testimonials to O'Hara's background, conduct, and fitness for military service and form supporting documentation for hisjapplication to be an assistant surgeon in the U.S. Army.

Series 2 consists of manuscript and typescript correspondence received, 1889-1898, primarily from Charles Bingham Penrose, which documents aspects of O'Hara's professional career.

Series 3 consists of manuscript and typescript correspondence received (26 items), 1900-1903, from physicians expressing interest in O'Hara's anatomosis forceps. Also included in Series 3 are printed notices of the meetings of the Section on Gynecology and the Philadelphia Academy of Surgery where O'Hara demonstrated the anatomosis forceps as well as related typescript correspondence (4 items), 1900.