Published in Occasional Papers California Academy of Sciences, in 1969, in volume 73, pages 1-3

Published in Occasional Papers California Academy of Sciences, in 1969, in volume 76, pages 1-11

Published in Occasional Papers California Academy of Sciences, in 1969, in volume 78, pages 1-9

Published in Occasional Papers California Academy of Sciences, in 1969, in volume 79, pages 1-143