This neon sign on Main Street, Rapid City, SD is iconic. Who's Hobby House, a local craft and art supply store has been in business more than 60 years. This sign was hung to advertise the business in 1961, and is currently listed on the National Register of Historic Signs. I knew there was some story behind the sign, so I went looking and discovered discovered the registry
I didn't know such a thing existed, it is under the auspices of the National Park Service, in conjunction with the National Register of Historic Places. Maybe your town has something listed there, original old neon signs are of particular interest.