Facts and theories concerning the insect headPublished in Smithsonian Miscellaneous Collections, in 1960, in volume 142, pages 1-61Pleistocene birds in BermudaPublished in Smithsonian Miscellaneous Collections, in 1960, in volume 140, issue 2, pages 1-11
Pleistocene birds in BermudaPublished in Smithsonian Miscellaneous Collections, in 1960, in volume 140, issue 2, pages 1-11