Medical Heritage Library
A digital curation collaborative among some of the world’s leading medical libraries, promotes free and open access to historical resources in medicine. The MHL’s growing collection of digitized medical rare books, pamphlets, journals, and films number in the tens of thousands, with representative works from each of the past six centuries.
The MHL includes both US and international sources. Since this collection is fairly large, it's easiest to search for your topic of interest (e.g. typanosomiasis (aka sleeping sickness)
) or browse the categories (e.g. tobacco