Cite

Northrop, John. "Police officers speaking to demonstrators during a Black Panther march down 20th Street South in downtown Birmingham, Alabama.." Alabama. Department of Archives and History. 1971-09-25, http://digital.archives.alabama.gov/cdm/ref/collection/amg/id/112601.

Northrop, John (1971-09-25). Police officers speaking to demonstrators during a Black Panther march down 20th Street South in downtown Birmingham, Alabama.. Retrieved from http://digital.archives.alabama.gov/cdm/ref/collection/amg/id/112601

Northrop, John. "Police officers speaking to demonstrators during a Black Panther march down 20th Street South in downtown Birmingham, Alabama.." 1971-09-25. June 29, 2025. http://digital.archives.alabama.gov/cdm/ref/collection/amg/id/112601.