@ Darryl. They said it just as you remember.
The Watchtower 1967 1st May pages 259 - 262 article heading "Where Are We According to God's Timetable?
Under the subheading "THE END OF 6,000 YEARS" on page 262 is this little gem ...
"The generation that was old enough to view those events with understanding in 1914 is no longer young. It no longer has many years to run. Already many of its members have died. But Jesus showed that there would still be members of "this generation" still alive at the time of the passing away of this wicked system of things ..."
The next paragraph starts ...
"Interestingly, the autumn of 1975 marks the end of 6000 years of human experience ... ... What will that year mean for humankind? Will it be the time when God executes the wicked and starts off the thousand-year reign of his Son Jesus Christ? It very well could, but we will have to wait and see. Yet of this we can be certain: the generation that Jesus said would witness those events is nearing its close. The time is close at hand. On God's "timetable" we are in the closing days of a wicked system of things that will soon be gone forever. ... "
The last paragraph concludes with ...
"... The prophecy is sure; the time is short."
All on your WTLibrary CDROM!