1939-1940 New York World's Fair Booklet "Yale in the World of Tomorrow" from 1940 with Trylon and Perisphere on front cover and half of Perisphere die-cut overhanging right edge. The booklet tells history of the Yale & Towne lock company and its exhibit at the Fair. 12 pages. Size: 9" high by 6" wide Condition: Fine. The left and right side of the cover page are darkened.