However, I do have the ADK High Peak Guides from 1950 (p. 90), 1962 (p. D-2), 1972 (p. D-3), 1985 (p. 264), and 1992 (p. 30). Every single one supplies the name, purpose, qualifications, and address for The Adirondack Forty-Sixers.
I see you are correct. It's in the text and I missed it while I was just looking. Don't think I used the "Adirondack, NY" address though. The Morrisonville address sounds more familiar to me. But anyway, the information was easily enough attainable.