New up at Internet Archive:
The 1922 series of Watchtower articles on chronology. From the file description:
These 1922 Watch Tower articles present acceptance of the Watchtower Society's chronological structure associated with 1874, 1878, 1910, 1914 and 1918 as a test of loyalty.
The Watch Tower magazine reasons that when Cyrus started his reign in 536 BCE, he issued the edict that enabled Jews to return home in that same year. From that date these articles, as did Russell, use the "seventy years of captivity" to calculate the destruction of Jerusalem at 606 BCE. They then use the "seven times" of Leviticus 26 to provide a 2520-year period that ended about August 1914, even though "all the things that some looked for did not materialize." (Watch Tower, May 15, 1922, page 150) "It was on this line of reasoning that the dates 1874, 1914, and 1918 were located, and the Lord has placed the stamp of his seal. ... Using this same measuring line ... it is an easy matter to locate 1925, probably the fall, for the beginning of the antitypical jubilee." (Watch Tower, May 15, 1922, page 150) As support for the Watch Tower's chronologies, the articles point to several 1845-year and 2520-year Biblical parallels as well as to the correspondence of dozens of measurements within the Great Pyramid of Egypt (Watch Tower, June 15, 1922, page 187). The Watch Tower thus calls for endurance: "[Jesus] commands his followers to tell the people that Satan's empire has ended; that the gentile times have ended, that the world has ended, and here is the proof of it; that the kingdom of heaven is at hand; that the time of restoration is here; that millions now living will never die." (Watch Tower, May 1, 1922, page 139)
These articles can be read online or downloaded in one PDF file here:
http://www.archive.org/details/1922WatchtowerArticlesOnChronology