Avoid Pickups!

Via Medical Museum:

Poster. Venereal disease. "Young, pretty, easy, but full of germs. Avoid pickups! Designed by: CRD. R.T.C.[?], Produced by: Chart Reproduction Plant. CRD. School, A.P.O.[?], MD." [Illustration. Venereal diseases. Propaganda. Posters. Prostitutes? Medicine, Preventive.]

Captain Hack; [World War 2?]

Is "Captain Hack" like a parallel universe Uncle Sam?