Published in Annals of the Carnegie Museum, in 1929, in volume 19, pages 107-113

Published in Annals of The Carnegie Museum, in 1929, in volume 19, pages 115-122

Published in Annals of The Carnegie Museum, in 1929, in volume 19, pages 123-134

Published in Annals of The Carnegie Museum, in 1929, in volume 19, pages 139-146