Title Genres Topics Date (Start) Date (End)
W. Ross Silcock letter to Nicholas S. Halmi regarding highlights of the Christmas bird count, January 30, 1977 Correspondence Field notes Bird watching Birds--Counting Birds--Research Ornithology--Methodology Fringillidae | Finches N/A N/A
Winter Raptor survey, 1977 Field notes Maps (documents) Reports Bird surveys Bird watching Birds of prey Birds--Research Ornithology--Methodology 1977-12-01 1977-12-31
Ione Getscher letter to Nicholas S. Halmi regarding bird sightings, February 15, 1977 Correspondence Field notes Bird watching Birds--Research Ornithology--Methodology 1977-02-15 N/A
Marie Carlson letter to Nicholas S. Halmi regarding bird sightings, February 9, 1977 Correspondence Field notes Bird declines Bird populations Bird watching Birds--Research Ornithology--Methodology 1977-02-09 N/A
Gladys Black letter to Vernon M. Kleen regarding bird sightings, January 10, 1977 Correspondence Field notes Maps (documents) Bird declines Bird watching Birds--Counting Birds--Research Ornithology--Methodology 1977-01-10 N/A
Audubon field notes, spring migration, 1963 Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1963-03-01 1963-05-31
Audubon field notes, fall migration, 1963 Field notes Bird watching Birds--Research Ornithology--Methodology Weather 1963-12-08 N/A
Pearl Knoop letter to Peter C. Petersen regarding bird sightings, December 7, 1963 Correspondence Field notes Bird watching Birds--Research Ornithology--Methodology 1963-12-07 N/A
Iowa Ornithologists' Union, quarterly field report, fall 1963 Field notes Bird watching Birds--Research Ornithology--Methodology 1963-08-01 1963-11-30
Audubon field notes, fall migration, 1963 Field notes Bird watching Birds--Research Ornithology--Methodology Weather 1963-08-01 1963-11-30
Audubon field notes, summer migration, 1963 Field notes Bird watching Birds--Research Ornithology--Methodology Weather 1963-06-01 1963-07-31
Letter to Peter C. Petersen regarding bird summer sightings, July 24, 1963 Correspondence Field notes Bird banding Bird watching Birds--Research Ornithology--Methodology Wild animal collecting 1963-07-24 N/A
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
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
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
Field notes, spring migration, 1963 Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1963-03-01 1963-05-31
Iowa Ornithologists' Union, Quarterly field report, spring 1963 Field notes Bird watching Birds--Research Ornithology--Methodology 1963-03-01 1963-05-31
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
Field notes, winter 1963 Field notes Bird watching Birds--Research Ornithology--Methodology Weather 1963-02-01 1963-02-28
Ruth Upp letter to Peter C. Petersen regarding bird sightings, March 16, 1963 Correspondence Field notes Bird watching Birds--Research Ornithology--Methodology 1963-03-16 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
Pearl Knoop letter to Peter C. Petersen regarding field notes, winter 1963 Correspondence Field notes Bird watching Birds--Research Ornithology--Methodology 1963-04-08 N/A