Scope and Contents The collection consists of materials by or about Jacob M. Da Costa, MD and his family from 1857-1903. The materials include addresses (1857-1900) to the College of Physicians of Philadelphia, commencement addresses to Jefferson Medical College (1874, 1883, 1887, and 1891), an 1872 introductory lecture to Jefferson students, and clinical lectures (1887-1900, with gaps) given at Pennsylvania Hospital. Also contained in the collection are medical journal articles (1881-1899); biographical...