Wonderful old folder issued by Denver and Rio Grande Rail Road, showing 20 views of life in the Rockies–Denver, trains, bridges, gorges, like that.  This was mailed in 1942 from Colorado to Iowa with a rare 1-1/2 cent stamp, and the only flaw we can see is a tear on one side where the back flap would tuck in.  What an atmospheric old item this is.  Grade: 3