Apollo Area Historical Society
PO Box 434
Apollo, PA 15613
https://apollopahistory.com
Email: ApolloPaHistory@gmail.com

Armstrong County Historical Museum & Genealogical Society
300 North McKean Street
PO Box 735
Kittanning, PA 16201
https://www.historicarmstrong.org/
Email: achgs300@gmail.com

Freeport Area Historical Society
PO Box 107
Freeport, PA 16229
(No website or email currently available)

Leechburg Area Museum & Historical Society
118 1st Street Leechburg, PA 1565
Leechburg, PA 15656
https://leechburgmuseum.org
Email: contactus@leechburgmuseum.org