New Suilline remains from the Miocene of NebraskaPublished in Pittsburgh Memoirs Carnegie Museum, in 1907, in volume 2, pages 305-320Archeological researches on the Pacific coast of Costa RicaPublished in Memoirs of the Carnegie Museum, in 1907, in volume 3, issue 1, pages 1-188
Archeological researches on the Pacific coast of Costa RicaPublished in Memoirs of the Carnegie Museum, in 1907, in volume 3, issue 1, pages 1-188