A similar project is Maplets [1] which contains a database of "national parks, state parks, metro maps, bus systems, ski resorts, universities, theme parks". So

A similar project is Maplets [1] which contains a database of "national parks, state parks, metro maps, bus systems, ski resorts, universities, theme parks". Some are georeferenced already but many are not. You can also scan and upload maps yourself [2]. [1] https://www.mobilemaplets.com/app https://www.mobilemaplets.com/app [2] https://www.mobilemaplets.com/contribute https://www.mobilemaplets.com/contribute