Published in Smithsonian Miscellaneous Collections, in 1931, in volume 73, issue 7, pages 1-5

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

Published in Smithsonian Miscellaneous Collections, in 1931, in volume 73, issue 7, pages 18-19

Created: 2015-05-24, modified: 2015-05-24

Published in Smithsonian Miscellaneous Collections, in 1931, in volume 73, issue 7, pages 23-28

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

Published in Smithsonian Miscellaneous Collections, in 1931, in volume 73, issue 7, pages 31-32

Created: 2015-05-24, modified: 2015-05-25

Published in Smithsonian Miscellaneous Collections, in 1931, in volume 73, issue 7, pages 33

Created: 2015-05-24, modified: 2015-05-25

Published in Smithsonian Miscellaneous Collections, in 1931, in volume 85, issue 2, pages 1-41

Created: 2014-12-19, modified: 2014-12-19