Canadian-born physician and researcher (1849–1919) widely hailed as the “Father of Modern Medicine.” TLS signed “Wm. Osler,” one page, 8.75 x 7, Oxford letterhead, July 8, 1905. Osler writes to an editor at the Youth’s Companion magazine. In full: “Thank you for your kind suggestion that I should write an article for the Youth’s Companion. I know the journal, of course, and its splendid position, and I should like very much indeed to accept your kind offer, but at present I am just as busy as I can possibly be. When would you wish it?…” Intersecting folds and a few small rust stains, otherwise fine condition. R&R COA.