It was a great magazine when Bruce Catton was the editor. Just about any topic you can think of (and a bunch you wouldn't) were treated in detail, with copious illustrations in full color. It went downhill in the late 70s/early 80s, around the time it went to paperback it got all politically correct and (worse) started repeating itself.
Periodically they would have a "Wild West" issue - complete with old-fashioned woodcuts.