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
Breeding bird survey, 1976 Checklists Bird watching Birds--Breeding Birds--Research Ornithology--Methodology N/A N/A
Gladys Black letter to Nicholas S. Halmi regarding bird sightings and Iowa Northern Shrikes checklist, February 8, 1977 Checklists Correspondence Field notes Bird watching Birds--Counting Birds--Research Ornithology--Methodology 1976-12-01 1977-02-28
Bird sightings checklist, spring 1977 Checklists Field notes Bird watching Birds--Research Ornithology--Methodology 1977-03-01 1977-05-31
Iowa Ornithologists' Union field check list, Betty Walters, summer 1977 Checklists Field notes Bird watching Birds--Research 1977-06-01 1977-07-31
Bird sightings checklist, summer 1977 Checklists Field notes Bird watching Birds--Research 1977-06-01 1977-07-31
Bird sightings checklist, spring 1978 Checklists Field notes Bird watching Birds--Counting Birds--Research 1978-03-01 1978-05-31
Bird sightings checklist, spring 1978 Checklists Field notes Bird watching Birds--Counting Birds--Research 1978-03-01 1978-05-31