OSLER, William (1849-1919). The Principles and Practice of Medicine. New York: D. Appleton and Co., 1892. 8o. (Joints cracked.) Original green cloth, spine gilt lettered (some wear to spine ends). Provenance: H.M. T[homas], one of Osler's disciples (presentation inscription from the author on front flyleaf: "Dr. Harry T[homas] from W.O. XI.15.01"). Fourth edition, PRESENTATION COPY. Garrison-Morton 2231; Osler 3543; Norman 1614. -- OSLER. Burton's Anatomy of Melancholy. Offprint from Yale review. New Haven: Yale Publishing Association, 1914. 8o. Contemporary cloth, original printed wrappers bound in. Provenance: Gilbert R. Redgrave, editor of the Short title catalogue (bookplate, note on front free endpaper and dedication, with presentation inscription from the author on original wrapper: "From W.O."). FIRST EDITION, offprint issue, with an ANS by the author to Gilbert Redgrave tipped in, and a note by Redgrave stating that "Burton was one of Osler's favorite writers, and he knew the "Anatomy" from cover to cover". Norman 1615 -- OSLER. Science and War: An Address delivered at the University of Leeds Medical School. Oxford: Clarendon Press, 1915. 8o. Original gray printed wrappers. Provenance: Unidentified recipient (presentation inscription from the author on front free endpaper); Medical and Chirurgical Library Faculty of Maryland (library stamp on title and last leaf). FIRST EDITION. Norman 1616 -- OSLER. The old Humanities and the New Science. London: John Murray, 1919. 8o. Original red printed wrappers. Provenance: John Louis Emil Dreyer, Tycho Brahe biographer (presentation inscription from the author on front wrapper: "J.L.E. Dreyer from the Author"). FIRST EDITION. Norman 1617. -- Bibliotheca Osleriana: A Catalogue of Books Illustrating the History of Medicine and Science, collected, arranged, and annotated by Sir William Osler, Bt., and bequeathed to McGill University. Oxford: Clarendon Press, 1929. 4o. Original blue cloth. Original tan printed dust jacket (some chipping to edges). Provenance: Emerson Crosby Kelly (signature on front paste-down. FIRST EDITION. Norman 1618. -- VALLERY-RADOT, Ren (1853-1933). The life of Pasteur with a foreword by William Osler, F.R.S. Translated by Mrs. R.L. Devonshire. London: Constable & Co., 1911. 2 volumes. 8o. Photoengraved frontispiece portrait (Vol. I). Original brown cloth, gilt-lettered spine. Provenance: E.H.J. Schusler (presntation inscription "E.H.J. Schusler from Wm. Osler Oxford Oct. 10. 1911"). Fourth English edition (first edition with Osler's foreword), PRESENTATION COPY. The standard biography of Pasteur, originally published in 1900, the first English translation published in 1901. Norman 1663. (7)