Got some extremely good news for you @pearsonified
First, found out that Dave had actually posted the 1969 one.
Then I used a image to text site to get the kanji from the 1978 catalogue and that sent me down on a YAJ rabbit hole that had these beauties: his “1978” catalog - I think it may be 1976 or 1977 actually; 1969 (Japan); unknown pre-1973; 1978 (Japan); 1988; 1972; unknown pre-1973; more 1969 pages.
Obviously the sellers don’t post images of all pages but at least this gives us a glimpse and maybe someone here could buy them and share pictures here. But for now, I’ve saved all pictures the sellers took.