Where was In the Border States filmed?
1910 film by D. W. Griffith
In the Border States (1910) was filmed in Delaware Water Gap National Recreation Area, 1 place named in its German Wikipedia’s Hintergrund section, in the United States. Wikidata itself records the shoot only as New Jersey. Each place says where its claim comes from.
Places per German Wikipedia's Hintergrund section
German Wikipedia’s Hintergrund section names 1 place. Each links to the sentence that says so.
Recorded only at country level
Also filmed in New Jersey, but the exact places are not known, so they are not on the map.
Filming locations that are mapped there: United States
