Photograph Signed / Calling Card

Wife of the influential German philosopher/scientist whose pioneering research on embryology resulted in his philosophy of entelechy -- the science and philosophy of the organism. PS, 4" X 6", n.p., n.y. Very good. Sepia tone head-and-shoulders formal portrait of an older Mrs. Driesch set within an oval. She signs large and bold "Margarete Driesch" in black ink on a darkish area below her portrait, making for contrast that is decent but not outstanding. Unusual. Also present is her printed calling card ("Frau Margarete Driesch / Geb. Reifferscheidt"), heavy stock 4¼" X 1 3/4". Near fine. On the bottom margin she pens her address ("Leipzig" and "Zollnerstr. 1") and on the verso she pens the address of the recipient of this photograph ("To Prof. T.H. Morgan / 117. Street No. 409 / New York, City") in brown ink. Thomas Hunt Morgan (1866-1945) was an influential American embryologist, geneticist and biologist who won the Nobel Prize for Physiology or Medicine in 1933; in 1905 he and Driesch corresponded about embryology issues, which is likely around the time this photograph was sent. An interesting pair.…