Document
Des Plaines River Wetlands Demonstration Project: Seed Bank StudyJanuary 1988
Mengler, Jeff, Wilhelm, Gerould
Document
Establishment of a Native Midwestern Plant Community through Relocation of Marsh Topsoil (Draft)1987
Wilhelm, Gerould
Document
Establishment of a Native Midwestern Plant Community through Relocation of Marsh Topsoil (Draft v. 2)1987
Wilhelm, Gerould
Serial
Branches: Newsletter of the Volunteers of the Morton Arboretum, Autumn 19901990
Way, Carol, Halperin, Marilyn J.
Serial
Branches: Newsletter of the Volunteers of The Morton Arboretum, Autumn 19911991
Stowell, Gladys
Article
The Arboretum’s East Woods: Are They Forever?December 21 1987 – March 20 1988
Wilhelm, Gerould
Document
1991/04/08: Memo from Gerard T. Donnelly to George Ware, Duane Henry, and Craig JohnsonApril 8 1991
Donnelly, Gerard T.
Photographic image
Jane Balaban speaking at Swink-Wilhelm book signing at Thornhill (Floyd Swink and Jerry Wilhelm seated)September 9 1994
Nachel, Jim
Photographic image
Jane Balaban and Jerry Wilhelm holding photos at Swink-Wilhelm book signing at Thornhill (Floyd Swink seated)September 9 1994
Nachel, Jim
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Christopher Dunn addressing group at Swink-Wilhelm book signing at Thornhill - closeup shot (Jerry Wilhelm and Floyd Swink seated)September 9 1994
Nachel, Jim
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Jerry Wilhelm signing book at Swink-Wilhelm book signing at Thornhill - Ray Schulenberg, John Taggert, and Jane Balaban in lineSeptember 9 1994
Nachel, Jim
Photographic image
Jerry Wilhelm signing book at Swink-Wilhelm book signing at ThornhillSeptember 9 1994
Nachel, Jim
Photographic image
Jerry Wilhelm signing book next to line at Swink-Wilhelm book signing at Thornhill - Joel Greenberg in white shirtSeptember 9 1994
Nachel, Jim
Photographic image
Jerry Wilhelm signing book at Swink-Wilhelm book signing at Thornhill - Jon Duer and friend standingSeptember 9 1994
Nachel, Jim