Published in Bulletin of The Southern California Academy of Sciences, in 1924, in volume 23, pages 42-50

Published in Bulletin of The Southern California Academy of Sciences, in 1924, in volume 23, pages 113-123

Published in Bulletin Southern California Academy of Sciences, in 1924, in volume 23, pages 173-177

Published in Bulletin of The Southern California Academy of Sciences, in 1924, in volume 23, pages 183-186