Title Genres Topics Date (Start) Date (End)
Letter from Peter Peterson to Vernon Kleen containing bird sighting notes, May 23, 1976 Correspondence Field notes Bird watching Birds--Migration Birds--Research Anseriformes | Ducks, Geese, and Swans Falconiformes | Hawks, Eagles, Falcons, Osprey, and Vultures Ornithology--Methodology Parulidae | Warblers Trapping 1976-05-23 N/A
Gladys Black letter to Nicholas S. Halmi regarding fall migration, 1976 Correspondence Field notes Bird watching Birds--Research Ornithology--Methodology Trapping 1976-12-10 N/A
Peter C. Petersen letter and checklist to Nicholas S. Halmi regarding fall migration, 1976 Correspondence Field notes Bird banding Bird watching Birds--Research Trapping 1976-12-05 N/A
Peter C. Petersen letter to Nicholas S. Halmi reporting spring 1977 bird observations, June 5, 1977 Correspondence Field notes Bird banding Bird populations Bird watching Trapping 1977-06-05 N/A