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