上松底州立公园Heritage: Pennsylvania 's State Parks 1893–1993. Harrisburg, Pennsylvania : Commonwealth of Pennsylvania , Pennsylvania Historical and Museum Commission
派斯克小岛州立公园Heritage: Pennsylvania ’s State Parks 1893–1993. Harrisburg, Pennsylvania : Commonwealth of Pennsylvania , Pennsylvania Historical and Museum Commission
賓夕法尼亞州議會大廈賓夕法尼亞州議會大廈(英語:Pennsylvania State Capitol)為賓夕法尼亞州政府的所在地,建築坐落於哈里斯堡市中心(英语:Downtown Harrisburg, Pennsylvania ),由喬瑟夫·米勒·休士頓(英语:Joseph Miller
鱗木屬藝術家筆下的鱗木復原圖 荷蘭的環保主義者Eli Heimans所繪製的鱗木復原圖(1911). 於賓夕法尼亞州立博物館(英语:State Museum of Pennsylvania )展出的鱗木化石 Fossilworks: Lepidodendron. [2018-07-04]. (原始内容存档于2021-12-12)
樱桃泉州立公园of Pennsylvania Prehistory. Anthropological Series of the Pennsylvania Historical and Museum Commission 1. Harrisburg, Pennsylvania : Commonwealth of Pennsylvania