In 1969, Humble Oil & Refining Co. held a big contest at its service stations. The patriotic-themed promotion featured a series of two dozen trading cards celebrating highlights of U.S. history; these were distributed in panels that also provided stamp-piece card segments that could be collected toward winning prizes. An album was produced to hold cards and stamps and, finally, a small number of jigsaw puzzle premiums were made. Presented here is one of those very scarce puzzles, featuring the illustration seen on Card #23 "An American Orbits the Earth (1962)." Sold in a decorative 5-1/2"-tall, 4"-diameter metal can that highlights the "Great Moments..." topic on its exterior, the puzzle survives as an eye-catching display piece. The puzzle is presumed to be complete, and a contest panel featuring Card #23 accompanies. Both items carry a "© 1969 Marden-Kane Inc." line, as well as Humble Oil trademarks.