 In July 1879, Russell began publishing a monthly religious magazine, "Zion's Watch Tower and Herald of Christ's Presence".In 1881 he co-founded Zion's Watch Tower Tract Society with William Henry Conley as president; in 1884 the corporation was officially registered, with Russell as president.Russell wrote many articles, books, tracts, pamphlets and sermons, totaling approximately 50,000 printed pages.