Title Genres Topics Date (Start) Date (End)
Report form for selected species in spring Checklists Bird watching Birds--Identification Ornithology--Methodology N/A N/A
Iowa Breeding Bird Atlas checklist Checklists Bird watching Birds--Habitat Birds--Identification Ornithology--Methodology Ornithology--Societies, etc N/A N/A
Robert Jessen letter and checklist to Vernon M. Kleen regarding birds sighted during 1974 fall migration, December 1, 1974 Checklists Correspondence Bird watching Birds--Identification Birds--Migration Birds--Research Ornithology--Methodology 1974-08-01 1974-11-30