In "Revenge of the Creature Features Movie Guide" by John Stanley, 3rd edition (1988) he writes this about the 1975 series:
After the success of GHOSTBUSTERS, three hoary episodes of a never aired series were dubbed onto video.
So the claim is that the 1975 series "never aired" is interesting. Of course, the book was written in 1988 without the use of databases on the Internet, however, the ensuing 30 years since this book was published and with people claiming they watched it on television and TV guides at the time had it listed on the schedules printed in newspapers (trust me, I sorted through thousands of papers ), anyone have a guess on why the author would make this claim?
He is a link to an image of the paragraph of text: