Title Genres Topics Date (Start) Date (End)
Robert Jessen letter and checklist to Vernon M. Kleen regarding winter birds sighted in Mahaska County, April 2, 1975 Checklists Correspondence Field notes Bird watching Birds--Identification Birds--Research Ornithology--Methodology 1975-04-02 N/A
The Birds of Red Rock Reservoir Checklists Bird watching Birds--Identification Ornithology--Methodology 1994-10-01 1994-10-31
Tri-city Bird Club daily field card compiled by Peter C. Petersen and Dale Birkenholz, May 29, 1956 Checklists Bird watching Birds--Counting Birds--Identification Anseriformes | Ducks, Geese, and Swans Ornithology--Methodology Scolopacidae | Sandpipers, Phalaropes, and allies 1956-05-29 N/A