The xerography had a great impact on the world. “Xerography is bringing a reign of terror into the world of publishing, because it means that every reader can become both author and publisher,” Marshall McLuhan wrote in 1966. This had powerful political effects. Secrets were harder to keep, documents easier to leak (Thompson). The xerography companies that are well known today that are here today such as, HP, and Cannon(Owen). In 1988, Ronald Reagan made a day called National Chester F. Carlson Recognition Day on October 21.  ​​​​​​​