The Piper Aviation Museum in Lock Haven, PA promotes the history and legacy of Piper Aircraft. It houses over 22 Piper airplanes, including the famous J-3 Piper Cub, plus several one-of-a-kind planes. Piper Aviation is considered to be one of the major general aviation companies in the U.S.
Somerset Historical Center, PA on Display - Pennsylvania's Neighborhood: Somerset
Why Not in Pennsylvania? Women's Suffrage in the Keystone State: 1910-1920 #2 - Women's History Month
Gettysburg Beyond the Battle Museum, It's History!