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Article
The Arboretum Landscape – A Sesquicentennial PerspectiveDecember 21 1968 – March 20 1969
Schulenberg, Ray
Article
Introduced Woody Plants in the Flora of the Chicago RegionSeptember 21 – December 20 1969
Swink, Floyd, Schulenberg, Ray
Article
Woody Plant Collections at the Morton Arboretum: A Historical PerspectiveDecember 21 1980 – March 20 1981
Schulenberg, Ray
Article
Woody Plant Collections at the Morton Arboretum: Content and ArrangementDecember 21 1981 – March 20 1982
Schulenberg, Ray