Article
A Tree by Any Other Name…(Or: What is Behind Name Changes?)March 21 – June 20 1975
Hess, William J.
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Arbor Day activities at The Morton Arboretum, Dr. Hess speaking to woman at Be a Botanist stationApril 1995
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Bill Hess and others planting tree on top of berm during Earth Day celebration and berm plantingMay 1990
Luthringer, Ruth
Serial
Branches: Newsletter of the Volunteers of the Morton Arboretum, Winter 19911991
Stowell, Gladys
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Clarence E. Godshalk's 90th birthday celebration scrapbook: guests listening to speakerJanuary 14 1987
Kohout, John
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Dr. William Hess placing disc flower (on stage) into the sputter coater1986
Kohout, John
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Dr. William Hess using a lens to examine a plant