Title Genres Topics Date (Start) Date (End)
Walter Rosene interview with WHO Radio Interviews Bird declines Bird populations Birds--Extinction Birds--Migration Extinct birds N/A N/A
Annotated copy of Polk County check-list of the observations of members of the Des Moines Audubon Society, 1953 Checklists Field notes Bird watching Birds--Migration Birds--Research 1938-11-17 1959-12-31
Annotated copy of Polk County check-list of the observations of members of the Des Moines Audubon Society, 1959 Checklists Field notes Maps (documents) Bird watching Birds--Migration Birds--Research 1949-06-05 1973-04-17
Iowa bird migration calendar Brochures Birds--Migration Birds--Research 1964-05-01 1964-05-31
Polk County check-list of the observations of members of the Des Moines Audubon Society Checklists Field notes Maps (documents) Bird watching Birds--Migration Birds--Research 1973-11-01 1973-11-30
Summary of Bird Banding Reports Bird banding Bird watching Birds--Migration Ornithology--Methodology Strigiformes | Owls 1937-04-01 1937-04-30
Field notes, spring migration, 1963 Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1963-03-01 1963-05-31
Audubon field notes for spring 1964 migration contributed by Woodward H. Brown, June 7, 1964 Field notes Bird populations Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1964-06-07 N/A
Pearl Knoop letter to Peter C. Petersen regarding bird sightings, June 10, 1964 Correspondence Field notes Bird populations Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1964-06-10 N/A
Audubon field notes for Des Moines, winter 1963-1964 Field notes Bird declines Bird populations Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1963-12-01 1964-02-28
Pearl Knoop letter to Peter C. Petersen regarding fall migration, August 17, 1963 Correspondence Field notes Bird watching Birds--Migration Birds--Nests Birds--Research Ornithology--Methodology 1963-08-17 N/A
Audubon field notes, spring migration, 1963 Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1963-03-01 1963-05-31
Field notes for Morse Lake, May 1963 Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology Parulidae | Warblers 1963-05-01 1963-05-31
Ottumwa Bird Club meeting minutes, 1943 Administrative records Birds--Migration Ornithology--Societies, etc Meetings 1943-01-01 1943-12-31
Robert L. Nelson letter to Peter C. Petersen regarding spring migration, June 14, 1963 Correspondence Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1963-06-14 N/A
Tim C. Moermond and Mike Orthel letter to Peter C. Petersen regarding spring migration, May 28, 1963 Artifacts (object genre) Correspondence Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1963-05-28 N/A
Pearl Knoop letter to Peter C. Petersen regarding spring migration, June 4, 1963 Correspondence Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1963-06-04 N/A
Joe Kennedy letter to Peter C. Petersen regarding field notes, winter 1963 Correspondence Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1963-03-01 1963-03-31
Audubon field notes, winter migration, 1963 Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1963-03-31 N/A
Tim C. Moermond letter to Peter C. Petersen regarding field notes, winter 1963 Correspondence Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1963-04-03 N/A
Florence McCaughey letter to Peter C. Petersen regarding 1962 fall migration report, December 6, 1962 Correspondence Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1962-12-06 N/A
Pearl Knoop letter to Peter C. Petersen regarding fall migration, December 15, 1962 Correspondence Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1962-12-15 N/A
Audubon field notes, fall migration,1962 Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1962-12-04 N/A
Iowa Ornithologists' Union, Quarterly field report, fall 1962 Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1962-08-01 1962-11-30
Vernon M. Kleen letter to Peter C. Petersen regarding field notes from the 1960s, January 19, 1989 Correspondence Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1989-01-19 N/A