In tribute to Jane Russell, the Los Angeles Library Facebook page posted this picture taken in 1942 at Terminal Island, where ships were being built.
Don't see any Rosie the Riveters there, but this was still very early in the war effort--not even two months past the attack on Pearl Harbor.
Here's the caption that went with it: "Continuing their all-out campaign to discourage careless talk about shipping and military operations in the Los Angeles-Long Beach harbor area, Naval authorities today began distributing thousands of posters driving home the vital message, 'Serve with Silence.' At the Terminal Island yard of the California Shipbuilding Company, Miss Jane Russell, motion picture actress, tacked up the first poster in January 1942. (Los Angeles Herald-Examiner Collection, order#00083250)"