For Sosnak biography, see previous item #952. Offered here is 4-1/8x9.5" envelope that has front all but covered in Sosnak's detailed pen and ink art. Art was created in celebration of the 1978 World Series, the "75th World Series" as noted by Sosnak text circle at left. It was this World Series that the New York Yankees won their 22nd Championship. Art features various Yankees players, including Babe Ruth, Yogi Berra, Joe DiMaggio, Mickey Mantle and others. Yankees logo appears at right, above area left blank for address purposes. Back of envelope has Sosnak's address. Letter has scattered moisture staining which is only noticeable at blank address area on front, more noticeable on back. Fine overall.