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Diaries, notebooks, mss. Commons, Frank and Marie. Tanager Hill Bird Lists (Box 55, Folder 510)
Diaries, notebooks, mss. Everett, Edward Addison. Index to birds banded (Box 58, Folder 535)
Diaries, notebooks, mss. Hochbaum, Albert H. Migrating Lesser Scaups (Box 58, Folder 543)
Diaries, notebooks, mss. Hvoslef, Johan C. Index to Forest and Stream (Box 65, Folder 601)
Diaries, notebooks, mss. Lugger, Otto. Catalogue of shells (Box 66, Folder 605)
Diaries, notebooks, mss. Williams, Robert S. Photo Album (Box 68, Folder 637)
Diaries, notebooks, mss. Williams, Robert S. Scrapbook (Box 68, Folder 633)
Dicentra cucullaria
Dicentra cucullaria
Dick Kolkman, Manager of Energy Forecasting at Northern States Power Company, Interview with Mary Trigg on Power Plants
Dicranum, close up
Die Eroberung der Luft
Die Eroberung der Luft
Die Eroberung der Luft
Die Eroberung der Luft
Die Eroberung der Luft
Die Eroberung der Luft
Die Eroberung der Luft
Die Eroberung der Luft
Die Eroberung der Luft