Published in University of Kansas Publications. Museum of Natural History, in 1961, in volume 13, pages 349-357

Published in University of Kansas Publications of the Museum of Natural History, in 1961, in volume 14, pages 69-72

Published in University of Kansas Publications Museum of Natural History, in 1961, in volume 14, issue 2, pages 9-27

Published in University of Kansas Publications. Museum of Natural History, in 1961, in volume 15, pages 1-148