Published in Bulletin of The Southern California Academy of Sciences, in 1938, in volume 37, pages 12-17

Published in Bulletin of The Southern California Academy of Sciences, in 1938, in volume 37, pages 23-29

Published in Bulletin of The Southern California Academy of Sciences, in 1938, in volume 37, pages 49-51

Published in Bulletin of The Southern California Academy of Sciences, in 1938, in volume 37, pages 52-54

Published in Bulletin of The Southern California Academy of Sciences, in 1938, in volume 37, pages 55-77

Published in Bulletin of The Southern California Academy of Sciences, in 1938, in volume 37, pages 80-87