For those who still argue that the Watchtower did not specifically state that 1975 would see Armageddon, consider what they did say;
1. The 1000 year reign of Christ would start within a few years of 1968.
2. Armageddon would come before the 1000 year reign of Christ starts.
3. The 1000 year reign of Christ would end before the end of God’s 7th creative Day.
4. God’s creative Day is 7000 years long.
5. God’s 7th Day started a few weeks or months after Adam was created.
6. Adam was created in 4026 BCE.
So while it is true that the Watchtower did not use the words, “Armageddon will come by 1975”, these six statements are saying precisely that.
For reference see, Watchtower, May 1, 1968, page 272, par 7, and Watchtower, August 15, 1968, page 499, par 30.