An Oligocene Eagle from WyomingPublished in Smithsonian Miscellaneous Collections, in 1933, in volume 87, issue 19, pages 1-9Pliocene bird remains from IdahoPublished in Smithsonian Miscellaneous Collections, in 1933, in volume 87, issue 20, pages 1-12
Pliocene bird remains from IdahoPublished in Smithsonian Miscellaneous Collections, in 1933, in volume 87, issue 20, pages 1-12