1975 and the Worldwide Church of God (Herbert W. Armstrong) Not just jws pushed 1975
Anyone who was ever a member of the Worldwide Church of God would immediately recognize the artwork icon that is used on this Field Guide to identify pages dealing with the WCG. It is an illustration from a booklet titled The Book of Revelation Unveiled at Last! that was first published by the organization in 1959 and enthusiastically promoted and distributed from that time until the early 1970s. A similar booklet titled 1975 in Prophecy contained similar illustrations by the same artist. That one purported to establish the fact that Jesus was going to return to set up His Kingdom and inaugurate the Millennium on Earth by the year 1975. The set of these two pieces of literature combined may have been the most effective “evangelistic tool” ever used by Herbert Armstrong to attract members for the RCG/WCG.
The booklets were full of dire warnings of what was going to happen before the fateful date of 1975–a Great Tribulation was going to come upon the inhabitants of the Earth with uncontrollable world-wide famines, disease epidemics, volcanic eruptions, earthquakes, and more, on a scale never before experienced by mankind. By the end of the booklets, the subtle implication was that there was a way of escape from all these horrible events… for those who became members of the organization that was behind the publication of the booklets.
http://www.isitso.org/guide/wcg.html
http://www.coghomeschool.org/site/cog_archives/booklets/1975%20In%20Prophecy.htm
While modern science and industry strive to prepare for us a push-button leisure-luxury-world by 1975, United States Assistant Weather Chief I. R. Tannahill warns us unofficially to really fear "the big drought of 1975." But the indications of prophecy are that this drought will be even more devastating than he foresees, and that it will strike sooner than 1975-probably between 1965 and 1972!