Title Genres Topics Date (Start) Date (End)
Audubon field notes, winter 1970-1971, and Woodward H. Brown letter to Vernon M. Kleen regarding reporting practices, March 29, 1971 Correspondence Field notes Bird watching Ornithology--Periodicals Publishers and publishing 1970-12-01 1971-03-29
Nicholas S. Halmi letters to Vernon M. Kleen regarding bird sightings and publication of summer report Correspondence Field notes Bird watching Publishers and publishing 1978-06-01 1978-08-08