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

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

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

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

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

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