1975 in Prophecy written by Herbert Armstrong in 1956 was the defining object of the religion of Herbert Armstrong: It contained prophecies of what was certain to happen in the next 20 years, based on British Israelism.
This was absolute nonsense, of course. The prophecies of Herbert Armstrong fell spectacularly flat, proving that he was a false prophet. He made numerous other prophecies at other times, all of which failed, but this was the most strident and at the central core of Armstrong's philosophy, eschatology and religion.
To read 1975 in Prophecy in all its glory, click on the image below and remember to click on the speaker symbol on the first page of the presentation for the theme: