World War II poster featuring an American sailor aboard ship looking out through a porthole. Artwork by “SARRA,” designed to discourage Americans from discussing troop movements. Published by the U.S. Government Printing Office in 1942. An early-war poster. Measures 14-1/4 by 20-inches. Usual fold creases from government mailing to post office or industrial plant. Good condition with one small wear spot in the form of a small circle at very bottom edge near center line.