Because Creel's committee kept meticulous records, we have some measure of how many people he reached. The U.S. government printed 75 million pamphlets and books (compare with USA Today, which has a subscription of 1.6 million). It introduced the “Four Minute Man” program, in which ordinary citizens were asked to give pro-war speeches, four minutes in length, at movie theaters while the reels were being changed. The more than 75,000 volunteers delivered a total of 755,190 speeches, reaching a very precisely estimated 134,454,514 people.

Tim Wu, The Attention Merchants, loc. 158