Great stuff. I like the quote by Carl Sagan. What did he mean by "They announced that the world _had_ in fact ended in 1914, and if the rest of us hadn't noticed, that was our lookout" ? I don't remember that. Did they actually say something like that, or is he just referring to their refusal to let go of 1914 as an important date?
From the masthead of the Jan. 1, 1930 Watchtower (and typical of the mastheads for several years):
TO US THE SCRIPTURES CLEARLY TEACH:
…
THAT THE WORLD HAS ENDED; that the Lord Jesus has returned and is now present; that Jehovah has placed Christ Jesus upon his throne and now commands all nations and people to hear and obey him.