The Medical Heritage Library, a collaborative digitization and discovery organization committed to providing open access resources in the history of healthcare and the health sciences, has curated a number of full text resources pertaining to vaccination, including materials that reflect both pro- and anti-vaccination viewpoints. These sources, organized chronologically, are available in full text for free. They trace the history of vaccination from the 18th century through the 1920s. Visit: Shelves: History of Vaccination