Will you co-operate or will you obstruct?--President Wilson

Poster urges people to work at war jobs. Poster urges people to work at war jobs. Printed in dark blue, red and pink on white paper within dark blue border. At left of title cartoon illustration signed: Phifer of workman waving hat at Uncle Sam in sky and saying, "You bet I will!"; note on floor reads, "Stick to your job, my boy. Uncle Sam" and bird says, "That's the stuff!" Text headed: America needs its man power explains illustration and urges people to get and keep jobs. "F-1." "Reproduction without alteration permitted by giving usual credit. Copies supplied on request."