GIS is underrated. This is awesome! Have you looked into speaking with the various SHPOs in each US State/Territory? I've worked with several of them a fair b

GIS is underrated. This is awesome! Have you looked into speaking with the various SHPOs in each US State/Territory? I've worked with several of them a fair bit and they have a ton of old maps hidden internally. Especially for small, specific areas of the state, like historical districts.