Bibliografía (6 obras)
Life Histories of North American Woodpeckers
2000
Life Histories of North American Petrels and Pelicans and Their Allies
1988
Life Histories of North American Shore Birds
1981
Life Histories of North American Thrushes, Kinglets and Their Allies
1965
Life Histories of North American Cuckoos, Goatsuckers, Hummingbirds and Their Allies
1940
Life Histories of North American Wood Warblers (Order Passeriformes).