I had the privilege of seeing a print of both Moonrise over Hernandez and the clearing winter storm in Yosemite in person as part of the "Western Exposure" exhibit. Truly amazing to see in person, though I preferred the clearing winter storm print. Interestingly enough there was another photograph he made not far from the clearing winter storm photo (I forget the name). The positions were remarkably similar, right down to the two tall trees in the lower right corner of the photograph.
Western Exposure also showed some of his color work, but most was B&W. If you get the chance to see Western Exposure, do so. You won't regret it.