Drawing
Evergreen Nature Trail Guide, page 6 illustrations and layout with preliminary sketches1940s
Watts, May Theilgaard
Photographic image
Tsuga canadensis, Platanus occidentalis (Eastern Hemlock, Sycamore), habitatNovember 24 2002
Hedborn Jr., Edward A.
Photographic image
Tsuga canadensis (Eastern Hemlock), cone, immatureMay 17 2012
Hedborn Jr., Edward A.
Photographic image
Tsuga canadensis, bark, branch (Eastern Hemlock), cone, matureApril 16 1998
Hedborn Jr., Edward A.
Photographic image
Tsuga canadensis (Eastern Hemlock), bark, branchApril 16 1998
Hedborn Jr., Edward A.
Photographic image
Tsuga canadensis (Eastern Hemlock), bark, branchNovember 24 2002
Hedborn Jr., Edward A.
Photographic image
Tsuga canadensis (Eastern Hemlock), bark, trunkNovember 23 2002
Hedborn Jr., Edward A.
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Tsuga canadensis (Eastern Hemlock), bark, twigNovember 24 2002
Hedborn Jr., Edward A.