I like the sound of the old maps and guides. Unfortunately living in Liverpool, not alot of American guides get over although I have a great old postcard book of Venice and a old travel guide to Denmark complete with map. I even found an old camera with a half used roll of slide film still inside. Still haven't gotten it developed yet. I'm looking forward to my next trip to the states to hopefully dig out some old guides at the thrift stores and yard sales. I tried to stop at the yard sales when we over last year. We were on Rt 211 in Virginia but the backseat teenage drivers had no time or patience for such things that don't involve air conditioning and food.
It was great reading about your collections.
Kind Regards!