Caption on top left image: Looking across n. end of Elect.[rical] to Manufacturers, World's Fair. 4/5 - 1639. Caption on bottom left image: Horticultural from North, World's Fair. 4/5 - 1638. Caption on top right image: 55th St. Entrance, World's Fair. 4/5 - 1641. Coption on bottom right image: West lagoon, World's Fair. 4/5 - 1640.