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Prairie Rattler, Crotalus viridis
Prairie rattlesnake, from life
Pratt Home, higher farm
Prehistoric animals, Hippopotamus and southern mammoth, illustration from a printed publication
Prehistoric animals, painting of Woolly rhinoceros, Font-de-Gaume, illustration from a printed publication
Prehistoric animals, Woolly rhinoceros, painting by Charles R. Knight printed in a publication
Prehistoric man, figurine in soapstone from the Grottes de Grimaldi, image of a sculpture in a printed publication
Prehistoric man, painting of wolf from the cavern of Font-de-Daume, illustration from a printed publication
Prehistoric man, sculpture of the ibex from Mas d'Azil, illustration from a printed publication
Present home of Samuel J. Brown
Prickly Pear cactus
Prickly Pear cactus
Prickly-pear cactus on Blue Mound
Prickly-pear cactus on Blue Mound
Printed image of a painting of Snow Buntings made by Louis Agassiz Fuertes
Printed map of Mille Lacs
Print photograph of a Ruffed Grouse's nest and eggs, copy
Prohosky's camp and club house on Ten Mile Lake
Prothonotary Warbler on side of stump
Prothonotary Warbler's nest in cigar box
Prothonotary Warbler's nest in cigar box, large
Prothonotary Warbler's nesting places
Prothonotary Warbler's nesting places
Prothonotary Warbler's nest in maple stump with reduced photo of opened nest in corner
Prothonotary Warbler's nest in stump before cutting
Prothonotary Warbler's nest in ventilator cap
Prothonotary Warbler's nest in ventilator cap
Prothonotary Warbler's nest in ventilator cap, large
Prothonotary Warbler's nest in willow stub, small
Prothonotary Warbler's nest, window, cigar box
Prothonotary Warbler's stump, large, opened
Prothonotary Warbler's stump, large, opened
Psoralea argophylla (Pediomelum argophyllum), detail of branching
Psoralea argophylla (Pediomelum argophyllum), single clump
Pterylosis Bittern Powder down, illustration from Ian Newton, "Dictionary of Birds"
Publications. "Journal of Social Hygiene," Editorial Files. Articles with Extensive Discussion. (Box 147, Folder 02)
Publications. "Journal of Social Hygiene," Editorial Files. Articles with no Publication Date. (Box 147, Folder 03)
Publications. "Journal of Social Hygiene," Editorial Files. Bibliographies of Social Hygiene & Related Materials. (Box 149, Folder 01)
Publications. "Journal of Social Hygiene," Editorial Files. Complementary Issue Recipients. (Box 145, Folder 09)
Publications. "Journal of Social Hygiene," Editorial Files. Correspondence re Possible Journal Articles. (Box 146, Folder 06)
Publications. "Journal of Social Hygiene," Editorial Files. Correspondence re Possible Journal Articles. (Box 146, Folder 07)
Publications. "Journal of Social Hygiene," Editorial Files. Ideas for Journal Articles. (Box 146, Folder 05)
Publications. "Journal of Social Hygiene," Editorial Files. Journal Articles, Pending. (Box 145, Folder 10)
Publications. "Journal of Social Hygiene," Editorial Files. Journal Articles, Pending. (Box 145, Folder 11)
Publications. "Journal of Social Hygiene," Editorial Files. Journal Articles, Pending. (Box 146, Folder 01)
Publications. "Journal of Social Hygiene," Editorial Files. Journal Articles, Pending. (Box 146, Folder 02)
Publications. "Journal of Social Hygiene," Editorial Files. Journal Articles, Pending. (Box 146, Folder 03)
Publications. "Journal of Social Hygiene," Editorial Files. Journal Articles, Pending. (Box 146, Folder 04)
Publications. "Journal of Social Hygiene," Editorial Files. Journal Correspondence (by issue)"(Box 148, Folder 01)
Publications. "Journal of Social Hygiene," Editorial Files. Journal Correspondence (by issue)"(Box 148, Folder 02)