AFIPS Press

First, the questions: does anybody know what happened to AFIPS Press? Next, the background: I bought a used AFIPS 1979 Conference Proceedings (Vol 48) of the National Computer Conference. I bought it for a single article. I'd like to scan and post that article online. Although I've scanned other material and put it online, I know ACM and IEEE are still very protective of even 40 year old publications, as they actively sell reprints online (some of which I've bought). This is a meaningful revenue stream to them. This is from the front of the book: (c) 1979 by AFIPS Press. Copying is permitted without payment of royalty provided that (1) each reproduction is done without alteration and (2) reference to the AFIPS Proceedings and notice of copyright are included on the first page. The title and abstract may be used without further permission in computer-based and other information-service systems. Permission to republish other excerpts should be obtained from AFIPS Press. It seems like putting it on a webpage is more akin to republishing it than it is copying it. I'd be more than happy to add the necessary credits to the scanned document, but that might not cut it. My first thought was to contact them and ask permission to publish this one article. Despite an hour of googling, I can't find what happened to them. Do they still exist (I haven't seen anything with a recent date published by them)? Did they get folded into ACM or IEEE? They used to be located at 210 Summit Avenue, Montvale, NJ 07645. If I enter that address into google maps, it reports about 20 businesses, none of them AFIPS Press. The Montvale New Jersey Business Directory doesn't list AFIPS Press either.