Where was Boxcar Bertha filmed?

Name: Boxcar Bertha
Released: 1972

1972 film directed by Martin Scorsese

Boxcar Bertha (1972) was filmed in Camden and Reader, 2 places named in its French Wikipedia’s Tournage section, in the United States. Wikidata itself records the shoot only as Kansas. Each place says where its claim comes from.

See them on the map → Wikipedia Source data

Places per French Wikipedia's Tournage section

French Wikipedia’s Tournage section names 2 places. Each links to the sentence that says so.

Towns & cities Reader United States Census-designated place in Arkansas
Towns & cities Camden United States City in and county seat of Ouachita County, Arkansas, United States

Recorded only at country level

Also filmed in Kansas, but the exact places are not known, so they are not on the map.

Filming locations that are mapped there: United States