Title Genres Topics Date (Start) Date (End)
Burt Gresham letter to Philip DuMont regarding Goose migration, April 9, 1938 Correspondence Field notes Surveys (documents) Bird watching Birds--Counting Birds--Migration 1938-04-09 N/A
C. A. Stewart letter to multiple recipients regarding a revised check list for the birds of Iowa, February 3, 1950 Correspondence Forms (documents) Instructional materials Bird populations Bird surveys Bird watching Birds--Identification Ornithology--Methodology 1950-02-03 N/A
Carl J. Bendorf letter to James J. Dinsmore regarding the Birdline answering machine and a sighting of a House Finch, July 30, 1987 Correspondence Field notes Bird watching Birdsongs Ornithology--Societies, etc 1987-07-30 N/A
Carl J. Bendorf letter to Nicholas S. Halmi regarding the sighting of a Lincoln Sparrow, July 16, 1978 Correspondence Field notes Bird watching Birds--Identification Birdsongs Songbirds 1978-07-16 N/A
Carl Priebe letter to W. Ross Silcock regarding Fremont County Snowy Owl sightings, November 24, 1993 Correspondence Field notes Bird kills Bird watching Birds--Identification 1993-11-24 N/A
Charlotte Scott letter to Nicholas S. Halmi regarding bird sightings, May 31, 1978 Correspondence Field notes Bird watching Birds--Research Ornithology--Methodology 1978-05-31 N/A
Charlotte Scott letter to Thomas H. Kent regarding sightings of American Avocets and a Brewer's Blackbird, fall 1992 Correspondence Field notes Bird watching Birds--Counting 1992-08-01 1992-11-30
Charlotte Scott letter to Thomas H. Kent regarding summer bird sightings, July 30, 1981 Correspondence Field notes Bird watching Birds--Nests Birds--Research Ornithology--Methodology 1981-07-30 N/A
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
Conrad F. Schlemmer letter to Nicholas S. Halmi regarding bird sightings, December 4, 1978 Correspondence Field notes Bird watching 1978-12-04 N/A
Conrad F. Schlemmer letter to Nicholas S. Halmi regarding bird sightings, June 14, 1978 Correspondence Field notes Bird watching Rare birds 1978-06-14 N/A
Conrad F. Schlemmer letter to Nicholas S. Halmi regarding spring bird sightings, April 22, 1979 Correspondence Field notes Bird watching Birds--Migration Phalacrocoracidae | Cormorants Water birds 1979-04-22 N/A
Dale Stone letter to Thomas Kent regarding Spring field reports, May 31, 1994 Correspondence Field notes Bird watching 1994-05-31 N/A
Dale Stone letter to Thomas Kent regarding fall field reports, November 18, 1994 Correspondence Field notes Bird watching Birds--Identification Birdsongs 1994-11-18 N/A
Dan Dorrance letter to Jim Dinsmore regarding Red-necked Grebe sighting, August 17, 1994 Correspondence Field notes Bird watching Birds--Identification Birds--Infancy 1994-06-01 1994-07-31
Darwin Koenig letter to James J. Dinsmore regarding summer bird sightings, August 3, 1987 Correspondence Field notes Bird watching Birds--Nests Tyrannidae | Flycatchers Birds--Infancy 1987-08-03 N/A
Darwin Koenig letter to James J. Dinsmore regarding summer bird sightings, August 3, 1989 Correspondence Field notes Bird watching Birds--Counting Birds--Nests Birds--Infancy 1989-08-03 N/A
Darwin Koenig letter to James J. Dinsmore regarding summer bird sightings, July 31, 1997 Correspondence Field notes Bird watching Birds--Identification Birds--Nests Birdsongs 1997-07-31 N/A
Darwin Koenig letter to James J. Dinsmore regarding summer bird sightings, July 31, 2002 Correspondence Field notes Bird watching Birds--Counting Birds--Nests 2002-07-31 N/A
Darwin Koenig letter to Nicholas S. Halmi regarding bird sightings, August 2, 1977 Correspondence Field notes Bird watching Birds--Research 1977-08-02 N/A
Darwin Koenig letter to Nicholas S. Halmi regarding bird sightings, December 1, 1978 Correspondence Field notes Bird watching Birds--Counting 1978-12-01 N/A
Darwin Koenig letter to Nicholas S. Halmi regarding bird sightings Correspondence Field notes Bird watching N/A N/A
Darwin Koenig letter to Nicholas S. Halmi regarding spring bird sightings, June 4, 1979 Correspondence Field notes Bird watching Birds--Nests 1979-06-04 N/A
Darwin Koenig letter to Nicholas S. Halmi regarding bird sightings Correspondence Field notes Bird watching Birds--Research 1977-12-01 1978-02-28