Published in Annals of The Carnegie Museum, in 1941, in volume 28, pages 133-136

Published in Annals of The Carnegie Museum, in 1941, in volume 28, pages 169-186

Published in Annals of The Carnegie Museum, in 1941, in volume 28, pages 309-322

Published in Annals of The Carnegie Museum, in 1941, in volume 28, pages 323-340