Webb's record was reported in the L.A. Times on November 10, 1985. At the time, Webb was working as caretaker of the Sierra Club cabin at Horse Camp. The article indicates that, prior to Webb, the ascent record was 2h25m, set in 1925 by David Lawyer of Pasadena.
In 1998, Webb climbed from Horse Camp to the summit, and skied back down, 6 times in 23h22m, for a totaly vertical ascent of 37,572 feet. Apparently, he had 6 pairs of skis stashed at the summit. This may have been a record for the most vertical feet ever climbed on a mountain in 24 hours (since broken). A report is here.
"If you don't take risks, you don't get the adventures." -- Robert Webb