Published in Annals of The Carnegie Museum, in 1930, in volume 19, pages 155-160

Published in Annals of The Carnegie Museum, in 1930, in volume 19, pages 161-165

Published in Annals of The Carnegie Museum, in 1930, in volume 19, pages 167-168

Published in Annals of the Carnegie Museum, in 1930, in volume 19, pages 185-204

Published in Annals of the Carnegie Museum, in 1930, in volume 19, pages 225-234

Published in Annals of The Carnegie Museum, in 1930, in volume 19, pages 235-239

Published in Annals of The Carnegie Museum, in 1930, in volume 19, pages 241-248

Published in Annals of the Carnegie Museum, in 1930, in volume 19, issue 3, pages 169-174

Published in Annals of the Carnegie Museum, in 1930, in volume 19, issue 3, pages 175-184

Published in Annals of the Carnegie Museum, in 1930, in volume 19, issue 4, pages 249-254

Published in Annals of The Carnegie Museum, in 1930, in volume 20, pages 39-55