56:41

Eastern White Pine- the Tree Rooted in American History

29:48

History of the Allegheny Ridge

56:47

Tractor Wars

26:53

Tracks Across The Sky - Pennsylvania's Kinzua Viaduct

21:31

Cathedral: The Fight to Save the Ancient Hemlocks of Cook Forest

24:22

Rise and Fall of the Pennsylvania Railroad

27:56

From stump to ship: A 1930 logging film

56:47

The Lost Forests of New England: Eastern Old Growth