A common thing for people to collect is a postcard. The Edsen Breyer Postcard Museum is an online-only collection of, among other things, old Niagara Falls postcards. There are some great postcard pictures of:
- the incline railway with the Minolta Tower in the background (and no other hotels)
- old aerial views of the Falls
- the Spanish Aero Car from 1926 (it didn’t look very safe
- and more