Title Genres Topics Date (Start) Date (End)
Mark Widrlechner letter to Hank Zaletel regarding the Boone County Christmas Bird Count Correspondence Bird surveys Bird watching Birds--Counting Ornithology--Methodology 1996-01-01 1996-12-31
Mark Widrlechner letter to Boone County Bird Count Participants regarding the 1999 Christmas Bird Count results, January 9, 1999 Correspondence Field notes Bird surveys Bird watching Birds--Counting Ornithology--Methodology 1999-01-09 N/A
Ben Bereskin letter to Wilmer J. Miller and Lotus Miller regarding a birding field trip, September 22, 1969 Correspondence Bird watching Birds--Migration Ornithology--Societies, etc Waterfowl 1969-09-22 N/A
Special spring bird census flyer Correspondence Fliers (printed matter) Bird surveys Bird watching Birds--Counting Birds--Migration 1970-05-10 N/A