Title Genres Topics Date (Start) Date (End)
Photograph of a Wood Duck in a house Photographs Birds--Research Ornithology--Methodology Birdhouses--Design and construction 1965-01-01 1965-12-31
Photograph of bird watchers at Hendrickson Marsh Photographs Bird watchers 1974-01-01 1974-12-31
Photograph of Big Bluestem Audubon Society past presidents Photographs Bird watchers Ornithology--Societies, etc 1998-05-01 1998-05-31
Photograph of a Rough-legged Hawk roost Photographs Birds--Habitat 1960-11-01 1961-02-28
Gladys Black letter to Michael Newlon regarding bird sightings including a Pine Grosbeak, February 1, 1984 Correspondence Field notes Photographs Bird feeders Bird watching Birds--Identification Rare birds 1984-02-01 N/A
Photograph of a Wood Duck house in tree near the Mississippi River Photographs Birds--Habitat Birds--Research Birdhouses 1966-01-01 1966-12-31
Photograph of Frederic Leopold's house with a Wood Duck house in a tree Photographs Birds--Research Wildlife conservationists Birdhouses 1966-01-01 1966-12-31
Photograph of the inside bottom of a Wood Duck house Photographs Birds--Research Birdhouses 1965-01-01 1965-12-31
Photograph of a male and female Wood Duck in a tree Photographs Birds--Habitat Birds--Research Wood duck--Behavior 1965-01-01 1965-12-31
Photograph of a snake among duck eggs in a Wood Duck house Photographs Birds--Eggs Birds--Research Birdhouses Predatory animals 1965-01-01 1965-12-31
Photograph of Wood Duck ducklings leaving the duck house Photographs Birds--Research Birdhouses Ducklings Wood duck--Behavior N/A N/A
Photograph of a mother Wood Duck with ducklings on the ground Photographs Birds--Research Ducklings Wood duck--Behavior 1965-01-01 1965-12-31
Photograph of an adult Wood Duck leaving a duck house Photographs Birds--Research Birdhouses Wood duck--Behavior 1965-01-01 1965-12-31
Iowa Ornithologists' Union board of directors, 1986 Photographs Bird watchers Ornithology--Societies, etc 1986-01-01 1986-12-31
Photograph of Wood Duck ducklings swimming in a bucket Photographs Birds--Research Ducklings Wood duck--Behavior 1965-01-01 1965-12-31
Photograph of Frederic Leopold on a ladder checking a Wood Duck house Photographs Bird watchers Birds--Research Birdhouses 1965-01-01 1965-12-31
Photograph of a male and female Wood Duck in a tree Photographs Birds--Habitat Birds--Research 1965-01-01 1965-12-31
Photograph of Wood Duck houses in trees Photographs Birds--Research Birdhouses 1965-01-01 1965-12-31
Photograph of a Wood Duck perched on a Wood Duck house Photographs Birds--Habitat Birds--Research Birdhouses 1960-01-01 1960-12-31
Photograph of a Wood Duck house Photographs Birds--Research Birdhouses 1960-01-01 1960-12-31
Photograph of a Wood Duck house and an observation blind in front of Frederic Leopold's house Photographs Birds--Research Birdhouses 1960-01-01 1960-12-31
Photograph of Frederic Leopold and a hunting dog Photographs Winter Hunting 1978-01-01 1978-12-31
Photograph of Frederic Leopold dressed in suit Photographs Wildlife conservationists 1971-01-13 N/A
Photograph of Frederic Leopold pulling a sled Photographs Winter Cross-country skiing N/A N/A
Photograph of Frederic Leopold next to tent Photographs Camping N/A N/A