ALS, one page, 8.75 x 3.75 partially affixed to a larger folding board, French Equatorial Africa letterhead, March 20, 1942. In full: 'Dear Mrs. Lilianthal, My collaborators join me in thanking you most heartily for the valuable contribution, which you have made to my hospital. With kindest regards from Mrs. Schweitzer and myself, Yours very sincerely, Albert Schweitzer.' Beneath Schweitzer's letter, and on the same page, his wife has written, in part: 'Remembering my passage in your beautiful house, I gladly take the opportunity of sending special greetings to you and Mr. Lilianthal. With best wishes, yours sincerely, Helene Schweitzer.' Accompanied by an envelope to addressed to another party with a return address and Schweitzer's signature on the reverse. Fragile, and in very good condition, with a vertical fold through a letter of Schweitzer's signature, chipped corners that have been partially repaired with old adhesive tape, and a separation at the top border. RRAuction COA.