Drawing
Evergreen Nature Trail Guide, page 13 illustrations and layout with preliminary sketches1940s
Watts, May Theilgaard
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Helen and Marge digging to a trout lily bulb
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Participants in a geology workshop, standing near evergreen trees
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Students in a Junior Forestry class, planting trees with teachers
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Education charts: Plants, insects, and animals in brown
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Education charts: Florida
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Exhibits: Animal Homes
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Stick figure sketch: student naturalists
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Forestry classroom: Tree surgery
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Boxelder and Poison Ivy
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Exhibit: DuPage River dioramas
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Student poster: Dissected owl pellet, #1
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Vegetable dyes: Butternut and Walnut hulls