Title Genres Topics Date (Start) Date (End)
Iowa Ornithologists' Union, Quarterly field report, winter 1966-1967 Field notes Bird populations Bird watching Birds--Research Winter 1966-12-01 1967-02-28
Iowa Ornithologists' Union, Quarterly field report, winter 1976-1977 Correspondence Field notes Bird populations Bird watching Birds--Research Winter 1976-12-01 1977-02-28
Orange-shafted Flicker in Lyon County Field notes Bird feeders Bird watching Birds--Identification Ornithology--Study and teaching Winter 1981-05-28 N/A
Christmas count, 1980-81 Field notes Reports Bird populations Bird surveys Bird watching Birds--Counting Birds--Identification Winter Citizen science 1980-12-20 1981-01-04
Photograph of Frederic Leopold pulling a sled Photographs Winter Cross-country skiing N/A N/A
Photograph of Frederic Leopold and a hunting dog Photographs Winter Hunting 1978-01-01 1978-12-31
Winter visitors Research notes Bird watching Birds--Geographical distribution Winter N/A N/A
Bill Youngworth letter to Woodward Hart Brown regarding dubious Christmas census reports, May 25, 1954 Correspondence Bird watching Birds--Counting Birds--Geographical distribution Winter Zoological specimens 1954-05-25 N/A
Bluestem Flyer, Volume 15, Number 7, March 1983 Newsletters Bird watching Feathers Ornithology--Societies, etc Winter Strigiformes | Owls 1983-03-01 1983-03-31