Title Genres Topics Date (Start) Date (End)
Pearl Knoop letter to Peter C. Petersen regarding nesting season, August 21, 1964 Correspondence Field notes Bird watching Birds--Migration Birds--Nests Birds--Research Ornithology--Methodology 1964-08-21 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
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
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
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
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
Orange-shafted Flicker in Lyon County Field notes Bird feeders Bird watching Birds--Identification Ornithology--Study and teaching Winter 1981-05-28 N/A
Opal Uher letter to James J. Dinsmore regarding a request to purchase a Peter C. Petersen publication, August 9, 1988 Correspondence Field notes Bird feeders Bird watching Birds--Nests Birds--Research Ornithology--Societies, etc Birds--Infancy 1988-08-09 N/A
Notes on Scissor-tailed Flycatcher, June 26, 1986 Field notes Birds--Identification Ornithology--Societies, etc Rare birds 1986-06-26 N/A
Notes on N. Goshawk observations - fall 1982 Field notes Birds--Identification Ornithology Rare birds 1982-10-31 1982-11-22
Northern Goshawk sighting details contributed by Robert Walton, 1981 Field notes Birds--Identification Ornithology Rare birds 1981-12-26 N/A
Northern Goshawk and Golden Eagle ighting details contributed by Bob Cecil, spring 1991 Field notes Birds--Identification Ornithology Rare birds 1991-03-31 1991-04-29
North American nest-record card program, Doug Reeves, summer 1987 Field notes Forms (documents) Bird watching Birds--Habitat Birds--Nests Ornithology--Methodology Rare birds Birds--Infancy 1987-07-10 N/A
Nicholas S. Halmi letter to Vernon M. Kleen regarding birds sighted during winter 1972-1973, including rare birds, March 20, 1973 Correspondence Field notes Bird populations Bird watchers Bird watching Birds--Habitat Birds--Migration Ornithology--Methodology Rare birds Country life 1973-03-20 N/A
Nicholas S. Halmi letter to Vernon M. Kleen regarding birds sighted around Iowa City during fall 1975, December 1, 1975 Correspondence Field notes Bird watching Birds--Research Falconiformes | Hawks, Eagles, Falcons, Osprey, and Vultures Ornithology--Methodology Charadriiformes | Shore-birds, Gulls, and Auks 1975-12-01 N/A
Nicholas S. Halmi letter to Vernon M. Kleen regarding birds sighted around Iowa City during fall 1974, November 30, 1974 Correspondence Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1974-11-30 N/A
Nicholas S. Halmi letter to Vernon M. Kleen regarding birds observed near Iowa City, April 1, 1976 Correspondence Field notes Bird watching Birds--Counting Birds--Research Ornithology--Methodology 1976-04-01 N/A
Neil Bernstein letter to James J. Dinsmore regarding personal papers, summer 1988 Correspondence Field notes Bird watching Birds--Research Ornithology--Societies, etc 1988-06-01 1988-07-31
Neil Bernstein letter to James J. Dinsmore regarding fall bird sightings, August 11, 1987 Correspondence Field notes Bird watching Birds--Counting Ornithology--Study and teaching 1987-08-11 N/A
Neil Bernstein letter to James J. Dinsmore regarding aerial photographs, June 12, 1988 Correspondence Field notes Bird watching Birds--Research Ornithology--Societies, etc 1988-06-12 N/A
Neil Bernstein letter to Carl J. Bendorf regarding August bird sightings, fall 1987 Correspondence Field notes Bird watching Birds--Counting Ornithology--Study and teaching 1987-08-01 1987-11-30
Michael C. Newlon letter to Thomas H. Kent regarding spring bird sightings, spring 1983 Correspondence Field notes Bird watching Birds--Identification Birds--Research Ornithology--Methodology 1983-03-01 1983-05-31
Michael C. Newlon letter and notes to Vernon M. Kleen regarding fall migration, November 19, 1975 Correspondence Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology Charadriiformes | Shore-birds, Gulls, and Auks Fringillidae | Finches Troglodytidae | Wrens 1975-11-19 N/A
Melba Wigg letter and report to Vernon M. Kleen regarding spring migration bird sightings near Council Bluffs, June 6, 1974 Correspondence Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1974-06-06 N/A
Melba Wigg letter and report to Vernon M. Kleen regarding 1975 fall migration around Council Bluffs Iowa, December 1, 1975 Correspondence Field notes Bird watching Birds--Migration Birds--Research Ornithology--Methodology 1975-12-01 N/A