David2002, you obviously were not there in the lead up to 1975 - otherwise you would have no need to raise that question!
I was an avid reader of all their literature from 1966 until 1994.I know what they said, what they emphasised - and what they later tried to deny that they meant!
While the WTS may not have written it in so many words, it is obvious that they wanted their readers to believe that the end was coming in 1975 - by the way that they left that thought hanging there.
AlanF is correct: anyone who thought otherwise at the time was branded 'spiritaully weak'.
And it is not what was wriiten that condemns them - it was also the Assembly programs. I can recall a Circuit Assembly late in 1974 - in which the District Overseer proclaimed "We still stand by our date of 1975".
(On hearing this, I can recall the audience wildly applauding).
AFTER 1975, I met some JWs who reckoned that they never believed all about 1975. But I tell you what, I never heard any speak up before 1975. What does that tell you!
No, as we say in Australia & NZ - by not saying so in so many words, but in still leaving the thought hanging there - the WTS was being "as cunning as a Shithouse Rat."