It also worked with the post office to censor seditious counter-propaganda .
Creel set out to systematically reach every person in the United States multiple times with patriotic information about how the individual could contribute to the war effort .
United States also worked with the post office to censor seditious counter-propaganda .
Creel set out to systematically reach every person in the United States multiple times with patriotic information about how the individual could contribute to the war effort .