In addition I was just browsing through ETI back issues (sad I know) and found the review of the MK14 version 1 on Page 27 of the August 1978 issue - it's mentioned on the cover as well with the Space Shuttle...
https://www.americanradiohistory.com...1978-09-78.pdf
That is relevant to our thread as it confirms the above with a nice diagram of the edge connector although it calls the columns 1-10 confusingly...