Title Genres Topics Date (Start) Date (End)
Erik Munson letter to the members of Big Bluestem Audubon Society regarding the Boone County Christmas Bird Count Correspondence Bird surveys Bird watching Birds--Counting 1990-01-01 1990-12-31
Erwin E. Klaas letter to James J. Dinsmore regarding a House Finch sighting, summer 1987 Correspondence Field notes Bird feeders Bird watching Birds--Identification 1987-06-01 1987-07-31
Francis Moore letter to Thomas Kent regarding spring 1998 sightings, June 4, 1998 Correspondence Field notes Bird watching Birdsongs Parulidae | Warblers 1998-06-04 N/A
Frank Ellis letter to Philip DuMont regarding bird specimens, January 13, 1933 Correspondence Bird watching Rare birds 1933-01-13 N/A
Frank Ellis letter to Philip DuMont regarding bird specimens and birds around Maquoketa, January 18, 1933 Correspondence Bird watching Birds--Identification Birds--Collection and preservation 1933-01-18 N/A
Fred K. Thompson letter to Nicholas S. Halmi regarding spring bird sightings and checklists, May 30, 1979 Checklists Correspondence Field notes Bird watching Birds--Counting Parulidae | Warblers 1979-05-30 N/A
Fred Lesher letter to Jim Dinsmore regarding Bald Eagle sighting, July 30, 1994 Correspondence Field notes Bird watching Charadriiformes | Shore-birds, Gulls, and Auks 1994-07-30 N/A
Fred Lesher letter to Nicholas S. Halmi regarding bird sightings, March 26, 1979 Correspondence Field notes Bird watching Birds--Counting Parulidae | Warblers 1979-03-26 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 Lesher letter to Vernon M. Kleen regarding bird sightings, February 8, 1979 Correspondence Field notes Bird watching Birds--Counting Birds--Identification 1979-02-08 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
Fred Pierce letter to Philip DuMont regarding Christmas bird census, December 25, 1938 Correspondence Bird surveys Bird watching Ornithologists Families 1938-12-25 N/A
Fred Pierce letter to Philip DuMont regarding book review, December 9, 1931 Correspondence Ornithological literature Books--Reviews 1931-12-09 N/A
Fred Pierce letter to Philip DuMont regarding a questionable Swallow-tailed Kite sighting, June 25, 1945 Correspondence Bird watching Birds--Identification 1945-06-25 N/A
Frederic Leopold letter regarding a request for Wood Duck house information, February 1, 1952 Correspondence Birdhouses--Design and construction Bird attracting 1952-02-01 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 A.S. Hawkins regarding hunting and the effect on duck populations, January 13, 1988 Correspondence Birds--Conservation Birds--Habitat Hunting--Moral and ethical aspects Wildlife habitat improvement Waterfowl management Duck populations 1988-01-13 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 Don Joffray regarding Wood Duck houses and nest predation, April 25, 1966 Correspondence Birds--Eggs Birds--Nests Birdhouses--Design and construction Predatory animals Raccoon--Behavior 1966-04-25 N/A
Frederic Leopold letter to Grace McManis regarding Wood Duck houses, May 17, 1966 Correspondence Birdhouses--Design and construction Birds--Feeding and feeds Ducklings 1966-05-17 N/A
Frederic Leopold letter to Gus Glaser regarding Wood Duck houses, May 23, 1966 Correspondence Birdhouses--Design and construction Bird attracting Ducklings 1966-05-23 N/A
Frederic Leopold letter to John C. Welter regarding a request for Wood Duck house information, September 14, 1964 Correspondence Birdhouses--Design and construction Bird attracting 1964-09-14 N/A
Frederic Leopold letter to Lawrence A. Bjonerud regarding identifying Wood Ducks, May 18, 1966 Correspondence Birds--Habitat Birds--Identification Birds--Nests 1966-05-18 N/A
Frederic Leopold letter to Merle Strasser regarding Wood Ducks and Jay N. Darling, May 20, 1966 Correspondence Wildlife conservationists Birdhouses--Design and construction 1966-05-20 N/A