Watch Tower Bible and Tract Society of Pennsylvania
The Watch Tower Society is a major publisher of religious books, magazines and Bibles. By 1979, it had 39 printing branches worldwide. In 1990 it was reported that in one year the society printed 696 million copies of its magazines, The Watchtower and Awake! as well as another 35,811,000 pieces of literature worldwide, which are offered door-to-door by Jehovah's Witnesses. In 2012, the Society said it prints more than 41 million copies of each magazine each month.