Recipient of the first Nobel prize for physics in 1901 and the discoverer of X rays. His achievement heralded the age of modern physics and transformed medical practice. ALS in German, signed “R,” one page, 4.5 x 2.75, no date. Letter to an unidentified lady. In full, “Tomorrow, Thursday, I will go to W.[urzburg]. Can I talk to you there? If you have business at the University, I will be there from 11:00 to 12:30 today.” In fine condition, with several folds and wrinkles, light show through from memo calendar on reverse and a light shade of toning. R&R COA.