Good points, Bill. And a dang fine image. Probably sold so well because it combined AA's landscape work with a more human-oriented subject.
The memorial book the Friends of Photography put out after AA's death (Ansel Adams 1902 -1984) has a photo on the last page of AA sitting in front of two copies of Moonrise... -- a straight print and a manipulated print. The second to the last page has a larger copy of the final manipulated print -- and it is printed in the book backwards!!!
Way too funny!