On May 9, 1936, the Post Office Department issued U.S. # 778 to salute the Third International Philatelic Exhibition, held in New York City on May 9-17, 1936. The souvenir sheet included four different postage stamps, all of which had been issued individually during the past year. Each stamp carried a 3¢ denomination. The stamps commemorate the Connecticut Tercentenary, the California Pacific Exposition, the Michigan Centennial, and the Texas Centennial.