Title Genres Topics Date (Start) Date (End)
Nicholas S. Halmi letter to Vernon M. Kleen regarding birds sighted around Iowa City during the winter season, April 1, 1974 Correspondence Field notes Bird populations Bird watching Birds--Behavior Birds--Migration Citizen science 1974-04-01 N/A
Nicholas S. Halmi letter to Vernon M. Kleen regarding birds sighted around Iowa City during winter season, April 5, 1975 Correspondence Field notes Bird watching Habitat (Ecology) Citizen science 1975-04-05 N/A
Letter to Iowa Ornithologists' Union members regarding an Iowa Birdline Correspondence Ornithology--Methodology Ornithology--Societies, etc Citizen science 1981-09-01 1981-09-30
Letter to members of the Iowa Ornithologists' Union announcing the Iowa Birdline is now in operation, December 1981 Correspondence Ornithology--Methodology Ornithology--Societies, etc Citizen science 1981-12-01 1981-12-31
Letter to members of the Iowa Ornithologists' Union regarding setting up a Birdline Correspondence Ornithology--Methodology Ornithology--Societies, etc Citizen science 1981-06-01 1981-12-31