Title Genres Topics Date (Start) Date (End)
Frederic Leopold letter to the editor of the St. Paul Pioneer Press Dispatch regarding hunting and the effect on duck populations, April 27, 1988 Correspondence Birds--Conservation Hunting--Moral and ethical aspects Wildlife habitat improvement Waterfowl management Duck populations 1988-04-27 N/A
Bill Gombold letter to Frederic Leopold regarding duck conservation, April 2, 1988 Correspondence Birds--Conservation Birds--Habitat Wildlife conservation--Law and legislation Hunting--Moral and ethical aspects Duck populations 1988-04-02 N/A
Frederic Leopold letter to A.S. Hawkins regarding hunting and the effect on duck populations, January 13, 1988 Correspondence Birds--Conservation Birds--Habitat Hunting--Moral and ethical aspects Wildlife habitat improvement Waterfowl management Duck populations 1988-01-13 N/A
Frederic Leopold letter to the Des Moines County Conservation Board regarding Wood Duck houses, April 21, 1970 Correspondence Bird watching Birdhouses Duck populations 1970-04-21 N/A
Peter Ward letter to Frederic Leopold regarding raising wood ducks, May 30, 1962 Correspondence Birds--Feeding and feeds Aviculture Eggs--Incubation Duck populations Ducklings 1962-05-30 N/A
Lee Miller letter to Frederic Leopold regarding Wood Duck houses, February 8, 1952 Correspondence Birdhouses--Design and construction Duck populations Ducklings Wood duck--Behavior 1952-02-08 N/A
Adrey E. Borell letter to Frederic Leopold regarding Wood Duck houses, December 12, 1951 Correspondence Birds--Habitat Birdhouses Predatory animals Duck populations 1951-12-12 N/A
A plan to save our ducks Reports Essays Birds--Conservation Birds--Habitat Wildlife conservation--Law and legislation Waterfowl management Duck populations N/A N/A
Preparations for the spring return of nesting Wood Ducks Reports Birdhouses Hunting--Moral and ethical aspects Eggs--Incubation Duck populations Ducklings Wood duck--Behavior N/A N/A