The Fielding H. Garrison Collection spans his years as a lecturer and librarian of the history of medicine at Johns Hopkins. The collection contains two series: correspondence and reprints. The bulk of the correspondence consists of photocopies of letters written by Garrison, which were collected and organized by Henry Sigerist after Garrison's death. Garrison's most extensive correspondence in this collection is with H.L. Mencken. There is also some correspondence between Sigerist and Garrison's correspondents, arranging for the copying of Garrison's letters. The reprints cover subjects such as epidemiology, geomedicine, gastroenterology, and the history of medicine. A reprint of "In Memoriam, William H. Welch" from The Scientific Monthly is also included.