A World War I poster asks, "Will you supply eyes for the Navy?"

One of a series of patriotic posters produced by the government, it also noted, "Navy ships need binoculars and spy-glasses. Glasses will be returned at termination of war, if possible. One dollar will be paid for each one accepted. Tag each article with your name and address and express or mail to Hon. Franklin D. Roosevelt, Ass't. Sec'y. of Navy c/o Naval Observatory, Washington, D.C. Will you help us "stand watch" on a destroyer?"