Published in Smithsonian Miscellaneous Collections, in 1928, in volume 73, issue 5, pages 9

Created: 2015-05-25, modified: 2015-05-25

Published in Smithsonian Miscellaneous Collections, in 1928, in volume 73, issue 5, pages 21-24

Created: 2015-05-25, modified: 2015-05-25

Published in Smithsonian Miscellaneous Collections, in 1928, in volume 73, issue 5, pages 25-28

Created: 2015-05-25, modified: 2015-05-25