Any Idea of make and model of the old truck, Dave? The OHV engine would indicate a later model than the body style suggests.
That structure in 3rd from last looks like the occupants just moved out. Can't get over the straight lines and how they squared things up.
DAA you need permission to go into those places? Went through Mesa Verde 60 yrs ago, but was with someone who worked there. Lots of stuff was off limits.