Published in Pittsburgh Annals of The Carnegie Museum, in 1910, in volume 6, pages 304-313

Published in Pittsburgh Annals of The Carnegie Museum, in 1910, in volume 7, pages 23-34

Published in Pittsburgh Annals of The Carnegie Museum, in 1910, in volume 7, pages 35-45

Published in Pittsburgh Annals of The Carnegie Museum, in 1910, in volume 7, pages 46-59

Published in Pittsburgh Annals of The Carnegie Museum, in 1910, in volume 7, pages 60-80

Published in Annals of the Carnegie Museum, in 1910, in volume 7, pages 89-143

Published in Pittsburgh Annals of The Carnegie Museum, in 1910, in volume 7, pages 144-158