Published in Pittsburgh Annals of The Carnegie Museum, in 1909, in volume 5, pages 141-158

Published in Pittsburgh Annals of The Carnegie Museum, in 1909, in volume 5, pages 488-489

Published in Pittsburgh Annals of The Carnegie Museum, in 1909, in volume 6, pages 281-294

Published in Annals of the Carnegie Museum, in 1909, in volume 6, issue 3, pages 73-280