German bacteriologist. He directed an institute for serum research at Steglitz, near Berlin, that was transferred to Frankfurt-am-Main as the Institute for Experimental Therapy. For his work in immunology he shared the 1908 Nobel Prize in Medicine with Elie Metchnikoff. Untranslated ALS in German, signed 'P. Ehr,' one page, 3.5 x 5.5, no date. In very good condition, with scattered toning and soiling, two punch holes to right edge, affecting a couple letters of text, a few creases and some stray ink marks. COA John Reznikoff/PSA/DNA and RRAuction COA.
