Hans ERNI (1909-2015). L.S. with drawing, Lucerne September 2, 1954, to Mrs. Jane Cooper in New York; 1 page in-4 (29 x 20 cm, framed); in English. He gives the address of his agent in New York, Joseph W. Faulkner, who holds a whole set of his original lithographs, which Mrs. Cooper will be able to buy from him. At the bottom of the letter, a drawing of a horse, with signature in the tail.