The official archives for the Yale Medical School is Manuscripts and Archives, Yale University Library. However, the Historical Library holds a large collection of Yale medical publications and Yale photographs, as well as some manuscripts.
Locate theses records in Orbis, the Yale University Library catalog.
For theses through 1900, search by non-LC call number, Archives T113. A finding aid is also available in the Library. • 19th-century theses (handwritten and typed) and some from Sheffield Scientific School.
Finding aid available in the library.

Edwin Alexander Anderson, De Calculo Vesicae.
M.D. Thesis, Medical Institution of Yale College, 1837.
The Yale University School of Medicine has required a thesis of its graduates for over 150 years. The Historical Library holds all of the medical theses from 1842 through 1900 and a handful of earlier theses such as the thesis illustrated above, which was written in English despite its Latin title. All medical theses are on Orbis, the Yale University Library catalog.