I found the essay (which in and of itself is amazing since the entire library is packed in boxes).
The journal was called INTERDVM by Patrick Henry Omlor. Starting in Issue No. 6, March 6, 1971, with Part 1, and continuing Part 2 on May 31, 1971, in Issue No. 7 and Part 3 on November 11, 1971, in Issue No. 8, was "The Robber Church" series of articles.