Drawing
Evergreen Nature Trail Guide, page 9 illustrations and layout with preliminary sketches1940s
Watts, May Theilgaard
Drawing
Trees Native To North America But Not To This Region That Can Be Grown HereWatts, May Theilgaard
Photographic image
Pinus ponderosa (Ponderosa Pine), cone, matureNovember 25 2008
Hedborn Jr., Edward A.
Photographic image
Pinus ponderosa (Ponderosa Pine), cone, matureNovember 25 2008
Hedborn Jr., Edward A.
Photographic image
Pinus ponderosa (Ponderosa Pine), cone, matureNovember 25 2008
Hedborn Jr., Edward A.
Photographic image
Pinus ponderosa (Ponderosa Pine), cone, matureNovember 25 2008
Hedborn Jr., Edward A.
Photographic image
Pinus ponderosa (Ponderosa Pine), habit, springMarch 22 2007
Hedborn Jr., Edward A.
Photographic image
Pinus ponderosa (Ponderosa Pine), habit, springApril 16 1998
Hedborn Jr., Edward A.
Photographic image
Pinus ponderosa (Ponderosa Pine), habit, winterNovember 25 2008
Hedborn Jr., Edward A.
Photographic image
Pinus ponderosa (Ponderosa Pine), leaf, matureNovember 25 2008
Hedborn Jr., Edward A.
Photographic image
Pinus ponderosa (Ponderosa Pine), leaf, matureNovember 25 2008
Hedborn Jr., Edward A.