USS NAVY SUBMARINE POSTERS NEEDED

Where can I find USS Navy Submarine WWII posters that are not copyrighted.

I need three for my book:

WWII Navy Poster - If You Tell

WWII Poster -They Did Their Part

WWII Navy Poster - Young Men Wanted

Please comment to let me know. Credit will be given.

Thanks, Mary Nida Smith author of Submarine Stories of World War II and new book, Heroes Beneath  the Waves: Submarine Stories of the Twentieth Century to be released November 2015.

Thank you for your help..