Dr. Amos Russell Thomas [1827-1895] was a surgeon and prominent professor of anatomy. He was born and resided in New York until he relocated to Philadelphia, Pennsylvania in 1854. There he was appointed to be a demonstrator of anatomy at the Pennsylvania Medical University, and was Chair of Anatomy from 1856 to 1866. During that time he was also a lecturer on artistic anatomy at the Pennsylvania Academy of Fine Arts. In 1867 he was appointed chair of anatomy at Hahnemann Medical College and held that position until his death in 1895. Papers reflect a small degree of Thomas's activity, including records of the Alumni Association of the Hahnemann Medical College of Philadelphia, 1894, jubilee anniversary program for Dr. Thomas's 40 years service to Hahnemann Medical College, resolutions on the death of Dr. Thomas in 1895, and a photograph album.