Thanks folks! I was just paging thru the October 1957 issue of Audio (as one does haha), and I was shocked (!) shocked I say. I should have searched, but I reacted. Thanks for the links, and I'll pause to search next time!
I must say though, now that I've dug around on here a bit I've realized that virtually the last bastion of information on the Catenoid, is the Klipsch community, and I find that slightly ironic, and a bit satisfying at the same time 🙂