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Handwritten notes infrastructure, building uses, and plant collections of the Morton ArboretumKammerer, E. Lowell
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Noteworthy Woody Plants Furnishing a Succession of Bloom Throughout the Year [historic document]Kammerer, E. Lowell
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List of Woody Plants Growing Naturally Within the Boundaries of The Morton Arboretum [historic document]Kammerer, E. Lowell