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Natural Pennsylvania :exploring the state forest natural areas
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Twelve trees : the deep roots of our future
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Pennsylvania trees
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Pennsylvania trees
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Trees of North America : the complete identification reference to trees- with full-color photographs displaying leaf shape, bark, flowers, and fruit; updated range maps; and conservation status
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A forest language : words that illuminate the astonishing world of trees
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One million trees : a true story
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Rafting days in Pennsylvania
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What wood is that? A manual of wood identification
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Finding the mother tree discovering the wisdom of the forest
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Finding the mother tree
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Ghost lumber towns of central Pennsylvania; Laquin, Masten, Ricketts, Grays Run
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Finding the mother tree [LP] : discovering the wisdom of the forest
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The nature of oaks : the rich ecology of our most essential native trees
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Logging in the Pennsylvania North woods : a collection of turn of the century photographs
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The wild trees : a story of passion and daring
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Just one oak : what a single tree can be
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"Pitch pine and prop timber" : the logging railroads of south-central Pennsylvania
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American canopy : trees, forests, and the making of a nation
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Whining saws and squealing flanges; Cross Fork, Emporium, Austin, Hicks Run, Galeton
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Sunset along Susquehanna waters: Williamsport, Leetonia, Slate Run, Cammal, Glen Union, Gleasonton
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Tanbark, alcohol, and lumber; the forest industries of St. Marys, Hallton, Wilcox, Portland Mills, Straight, Johnsonburg
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"Wild catting" on the mountain; the William Whitmer & Sons Company and the Whitmer-Steele Company operations in Cambria, Centre, Clearfield and Union counties, Pennsylvania and Cornwall, Rockbridge county, Virginia
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Tionesta Valley; Sheffield, Brookston, Loleta, Bear Creek, Cherry Grove
