Our newest database is now live! The William Osler Letter Index provides a way of locating information about the letters and other material that Dr. Harvey Cushing (1869-1939) gathered for his Pulitzer-winning biography The Life of William Osler (1925). Cushing collected thousands of letters to and from Osler, having them copied and returning the originals, and made many notes throughout his research. A guide to these was previously available only to on-site users. The online index contains descriptions of these letters, Cushing’s notes and manuscript excerpts, and further Osler material from other archival collections and fonds, including the Sir William Osler Collection (P100), the Malloch Family Fonds (P107), and the Maude Abbott Collection (P111). Each description provides information on the sender, the recipient, the place and year of writing, and a brief abstract of the letter’s contents. Please visit and let us know if you have any feedback!