Title Genres Topics Date (Start) Date (End)
Clarence Cottam letter to Walter Rosene regarding the analysis and contents of Long-eared Owl pellets, May 28, 1936 Correspondence Reports Birds--Research Ornithology--Methodology Bird droppings 1936-05-28 N/A
Clark Hollingsworth letter to Frederic Leopold regarding a request for information on Wood Ducks, January 6, 1952 Correspondence Ornithology--Study and teaching Birds--Feeding and feeds Bird attracting 1952-01-06 N/A
Darwin Koenig letter to Thomas H. Kent regarding summer bird sightings, July 31, 1981 Correspondence Field notes Bird watching Birds--Counting Birds--Nests Birds--Research Ornithology--Methodology 1981-07-31 N/A
David A. Newhouse letter to Thomas H. Kent regarding summer bird sightings, July 25, 1981 Correspondence Field notes Bird watching Birds--Nests Birds--Research Ornithology--Methodology Phasianidae | Pheasants, Turkeys, and Grouse Water birds Weather 1981-07-25 N/A
David Ewert letter to Thomas H. Kent regarding a Cerulean Warbler sighting, May 23, 1983 Correspondence Field notes Bird watching Birds--Research Ornithology--Methodology 1983-05-23 N/A
Dean Mosman letter to Vernon Kleen regarding hawks, April 8, 1976 Correspondence Field notes Bird watching Birds--Research Ornithology--Methodology 1976-04-08 N/A
Dean Mosman letter to Thomas H. Kent regarding summer bird sightings, July 29, 1981 Correspondence Field notes Bird declines Bird populations Bird watching Birds--Nests Birds--Research Ornithology--Methodology 1981-07-29 N/A
Letter from Dean Mosman to Vernon Kleen containing bird sighting notes, June 14, 1976 Correspondence Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1976-06-14 N/A
Dorothy Franek letter to Peter C. Peterson regarding her first winter bird population study, March 10, 1969 Correspondence Bird watching Birds--Identification Ornithology--Methodology Weather 1969-01-01 1969-03-31
Doug Trapp letter to James Dinsmore regarding sick Gyrfalcon, March 7, 1983 Correspondence Field notes Birds--Identification Ornithology Rare birds Wildlife rehabilitation 1983-03-07 N/A
Douglas C. Harr letter to Thomas H. Kent regarding summer bird sightings, July 23, 1981 Correspondence Field notes Bird watching Birds--Nests Birds--Research Ornithology--Methodology 1981-07-31 N/A
Edward William Nelson letter to the bird migration observers of the Biological Survey regarding a change in reporting bird observations, March 2, 1925 Correspondence Instructions (document genre) Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1925-03-02 N/A
Fred Lesher letter to Thomas H. Kent regarding a raptor survey and winter bird sightings, February 6, 1983 Correspondence Field notes Bird surveys Bird watching Birds--Research Ornithology--Methodology 1983-02-06 N/A
Fred Pierce letter to Oscar Allert regarding stamp collecting, May 20, 1939 Correspondence Bird watching Ornithology--Periodicals Stamp collecting Postage stamps 1939-05-20 N/A
Frederic Leopold letter to Keith M. Schreiner regarding Schreiner's thesis and Wood Duck nest predation, March 5, 1952 Correspondence Birds--Nests Ornithology--Study and teaching Predatory animals Squirrels--Behavior 1952-03-05 N/A
Frederic Leopold letter to Clarence Schneider regarding a Wood Duck study, March 29, 1963 Correspondence Bird surveys Birds--Nests Ornithology--Methodology Birdhouses Ducks--Counting 1963-03-29 N/A
Frederic Leopold letter to Clarence W. Moody regarding a Wood Duck study, March 29, 1963 Correspondence Bird surveys Bird watching Birds--Nests Ornithology--Methodology Ducks--Counting 1963-03-29 N/A
Frederic Leopold letter to Peter P. Laude regarding an invitation to view the Wood Ducks and the Iowa Ornithologists' Union annual meeting, February 18, 1952 Correspondence Birds--Habitat Congresses and conventions Ornithology--Societies, etc Ornithology--Study and teaching Wood duck--Behavior 1952-02-18 N/A
Frederic Leopold letter to Peter P. Laude regarding nesting Wood Ducks and the Iowa Ornithologists' Union annual convention, May 12, 1952 Correspondence Birds--Habitat Birds--Nests Congresses and conventions Ornithology--Societies, etc 1952-05-12 N/A
Frederic Leopold letter to Peter P. Laude regarding the Iowa Ornithologists' Union annual meeting, January 16, 1952 Correspondence Congresses and conventions Ornithology--Societies, etc Meetings 1952-01-16 N/A
Frederick Lincoln letter to Mrs. J. E. Stewart regarding "Birds of Polk County, Iowa", December 8, 1931 Correspondence Ornithology--Methodology Ornithological literature English language--Homonyms 1931-12-08 N/A
George Hendrickson letter to Philip DuMont regarding updates to the Revised List of the Birds of Iowa, December 13, 1943 Correspondence Birds--Geographical distribution Birds--Nests Ornithology--Methodology Ornithological literature 1943-12-13 N/A
George Hendrickson letter to Philip DuMont regarding unlisted Water Ouzel, February 2, 1944 Correspondence Ornithology--Methodology Birds--Collection and preservation Ornithological literature 1944-02-02 N/A
Gladys Black letter to Vernon Kleen regarding Evening Grosbeak invasion, March 24, 1976 Correspondence Field notes Bird populations Bird watching Birds--Research Ornithology--Methodology 1976-03-24 N/A
Gladys Black letter to Vernon Kleen regarding Evening Grosbeak invasion, January 24, 1976 Correspondence Field notes Bird populations Bird watching Birds--Research Ornithology--Methodology 1976-01-24 N/A