Stan. V. Henkels Catalog, October 21, 1936, No. 110. According to the catalog description LINCOLN's autograph endorsement appears on an envelope. Another catalog listing of this endorsement describes the envelope as being of ``the U.S. Sanitary Commission addressed to Gen. [George?] C. Jones, Washington.'' (J. C. Morgenthau & Company, Inc., Catalog, May 8, 1934, No. 163).