The Semi-Centennial of Anæsthesia: October 16, 1846 - October 16, 1896. Boston: [Privately printed for] Massachusetts General Hospital, 1897. Title page, chapter headings, and initials by Bruce Rogers. A commemorative volume produced for an event held on the fiftieth anniversary of the first public demonstration of surgical anesthesia. Tissue-guarded engravings of Massachusetts General Hospital (as frontis), commemoration invitation, plate depicting physicians surrounding patient (October 16, 1846), and portraits of J.C. Warren and William G. Morton. Maroon cloth with beveled edges and gilt lettering to front cover and spine. Measures approximately 7.75" x 10.25". Some fading wear to edges, chipping to spine tips. Front outer hinge repaired. Offsetting to endpapers. Very scarce. Haas 10.