I'm working on a roleplaying game and I'm having difficulty figuring out what it needs as locations. We've got a diner, a drive in, gas station, a bar, and a few other things, but we want it to be fairly accurate. Any help is much appreciated!
You can try looking at old phone books. The Library of Congress has a quite large selection. In case you're quite young, the Yellow Pages would be a listing of all businesses in town.
There is one of Davenport Iowa in 1956/57 (somewhat randomly selected), the yellow pages starting here: https://www.loc.gov/resource/usteledirec.usteledirec05562/?sp=86&r=-0.34,0.255,1.7,0.737,0