I have come across some prints, about 12 in all. Looks like silver gelatin? Likely printed in the 50's - that's about all I can tell.
There was talk about Ansel Adams, but the workmanship doesn't seem like it fits. My guess is that they are simply well done prints from a photographer.
Two of them have pikes peak written on the back and the old tree says 1000 year old tree behind old mission house at garden of the gods