The Hollywood blacklist began on November 25, 1947.
During this same period, a number of influential newspaper columnists covering the entertainment industry, including Walter Winchell, Hedda Hopper, Victor Riesel, Jack O'Brian, and George Sokolsky, regularly offered up names with the suggestion that they should be added to the blacklist
 In 1949, the Americanism Division of the Legion issued its own blacklist  a roster of 128 people whom it claimed were participants in the "Communist Conspiracy"

