Title Genres Topics Date (Start) Date (End)
Frederic Leopold letter to Clarence Schneider regarding a Wood Duck study, March 29, 1963 Correspondence Bird surveys Birds--Nests Ornithology--Methodology Birdhouses Ducks--Counting 1963-03-29 N/A
Ries Tuttle letter to Frederic Leopold with a forwarded letter from Ronald H. Wilkison regarding Wood Duck houses, January 9, 1952 Correspondence Birdhouses--Design and construction Bird attracting 1952-01-09 N/A
Frederic Leopold letter regarding a request for Wood Duck house information, February 1, 1952 Correspondence Birdhouses--Design and construction Bird attracting 1952-02-01 N/A
Iowa Bluebird Directory 1990, Bluebird Recovery Program Maps (documents) Reports Charts (graphic documents) Bird populations Bird watchers Birds--Conservation Birds--Nests Birdhouses--Design and construction Predatory animals Wildlife reintroduction Insect pests--Control 1990-01-01 1990-12-31