americasroof, Jack is "Wtny n1." on this message board. "Bob R" (Bob Rockwell) is the other member mentioned in the article. "Richard P" (Richard Piotrowski) is closing in on 100 - maybe this year. I'd bet Kurt Wedburg has at least 100 summits just by the Mountaineers Route. Oh yeah, there's also some cook named Doug . . .
If there's a "club", it's probably informal - but convenes at the Whitney Portal Store during the summer months. The founding member was most likely Gustave Marsh 100 years ago