Ned MacKay, who writes a weekly column about the East Bay parks, mentions Herr Coomber.

His favorite park is Morgan Territory Regional Preserve east of Mount Diablo, because trails radiate out from it for miles in every direction. From there he can go into Mount Diablo State Park, down to Round Valley and back, or to the Contra Costa Water District’s lands at Los Vaqueros Reservoir. He also enjoys Las Trampas Regional Wilderness, a mostly vertical regional park near San Ramon. And he has traversed the Ohlone Wilderness Trail, a rugged track that extends for 29 miles between Del Valle Reservoir near Livermore and Mission Peak in Fremont.

His wheelchair is not extensively modified, though it does have independent rear suspension and Coomber changes to knobby wheels for the dirt trails. He plans to try out a two-speed chair, though the trade-off for the mechanical advantage is greater weight.

“I don’t go anywhere in a hurry,” Coomber says, “But I do get there.”

The article mentions Bob’s gearing for his latest White Mountain summit attempt in a couple weeks, which I’m planning to attend and record for posterity. More at this thread at backpacker.com