I picked this (and the second and third catalogs) up from a book swap at my shul, and wow! I was seriously impressed by these books, which are so funny, so comprehensive, and such a time capsule of 1970s chevurahniks. So fascinating to see what has changed in the years since, with some of these once-very-progressive ideas being mainstreamed and others failing, unfortunately, to really catch on, or sometimes even seeming conservative/moderate now.
If you're interested at all in the chevurah movement, in neo-Hasidism or the Jewish Renewal movement, this will be really interesting for you. I loved all the tiny, hand-drawn cartoons in the margins, and the graphic design is just beautiful. This reminded me a lot of my time in grad school, going through old issues of Christopher Street -- we could use a revival of these community magazines, imo!