Published in Smithsonian miscellaneous collections, in 1951, in volume 117, issue 1, pages 1-58

Published in Smithsonian Miscellaneous Collections, in 1951, in volume 117, issue 2, pages 1-11

Published in Smithsonian miscellaneous collections, in 1951, in volume 117, issue 3, pages 1-23

Published in Smithsonian miscellaneous collections, in 1951, in volume 117, issue 4, pages 1-22