Published in Bulletin of The Southern California Academy of Sciences, in 1953, in volume 52, pages 1-27

Published in Bulletin of The Southern California Academy of Sciences, in 1953, in volume 52, pages 67-70

Published in Bulletin of The Southern California Academy of Sciences, in 1953, in volume 52, pages 71-75

Published in Bulletin of The Southern California Academy of Sciences, in 1953, in volume 52, pages 119-126

Published in Bulletin of the Southern California Academy of Sciences, in 1953, in volume 52, issue 2, pages 48-56