Published in Bulletin of The Southern California Academy of Sciences, in 1948, in volume 46, pages 77-78

Published in Bulletin of The Southern California Academy of Sciences, in 1948, in volume 46, pages 84-89

Published in Bulletin of the Southern California Academy of Sciences, in 1948, in volume 46, issue 2, pages 111-121

Published in Bulletin of The Southern California Academy of Sciences, in 1948, in volume 47, pages 6-10

Published in Bulletin of The Southern California Academy of Sciences, in 1948, in volume 47, pages 17-21

Published in Bulletin of The Southern California Academy of Sciences, in 1948, in volume 47, pages 34-44

Published in Bulletin of The Southern California Academy of Sciences, in 1948, in volume 47, pages 103-110

Published in Bulletin of the Southern California Academy of Sciences, in 1948, in volume 47, issue 3, pages 100-102