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Nature School for Teachers, May T. Watts addressing a group of teachersOctober 1939
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Nature School for Teachers, May T. Watts with large group in a clearingOctober 1939
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May T. Watts and class at the Arboretum, riding in an open-air tram
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May T. Watts and class at the Arboretum, riding in an open-air tram
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May T. Watts and class at the Arboretum, sitting on a bench
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Helen and Marge digging to a trout lily bulb
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Helen measuring a trout lily bulb root
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Marion inspecting a skunk cabbage
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Ruth inspecting water life
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Mabelle reading an informational device
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Mr. Nelson inspecting a specimen of sedge or grass
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A woman drawing a plant specimen
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Bernice Osterheim using a plant press
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May T. Watts with class at work on Plot II
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Neal McLain measuring the diameter of a maple tree trunk
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Participants in a geology class workshop, in a classroom