John Collins Warren (surgeon, born 1842)

He developed a special knife for the dissection of breast tumors and had it produced by Codman and Shurtleff, makers of surgical tools.

[3] In addition to his work with Harvard medical school, Warren was employed by Massachusetts General Hospital as a surgeon from 1876.

[1] In 1908, after his retirement, he was made an overseer of Harvard University until his death on November 3, 1927.

He published Surgical Pathology and Therapeutics (1895); The Anatomy and Development of Rodent Ulcer; Pathology of Carbuncle and Columnal Adipose; The Healing of Arteries after Ligature in Men and Animals; and edited the International Textbook of Surgery (1900).

[1] Warren was married, May 27, 1873, to fellow Brahmin Amy Shaw of Boston, the daughter of Gardner Howland Shaw and Cora Lyman, and niece of the scientist and congressman Theodore Lyman III.