Mike, this info is pretty old, so I'm not sure:
Dave Sheldon (Lone Pine) (760) 876-8232
Bob at (760) 876-1915
Mammoth: Rolf Knutson 760-934-6588
Also, call the Whitney Portal Hostel 760-876-0030, if anyone is available, they should know.
Or maybe Lone Pine Chamber of Commerce (760) 876-4444
If you find anyone, please report back.