This is the only book I've seen or heard of that has a word index, geographic area index, dated prophecy index, astrological allignments index and much more, allowing quickly finding quatrains with such references. This should immediately be republished, what an oversight with the mellinial interest and the famous 1999 quatrain, with many other possibly related quatrains. Edgar has some questionable interpretations, but for the most part, he has put together a researcher's dream here.I'm lucky the Library here has it.