Published in Smithsonian Miscellaneous Collections, in 1929, in volume 73, issue 6, pages 4-8

Published in Smithsonian Miscellaneous Collections, in 1929, in volume 73, issue 6, pages 15

Published in Smithsonian Miscellaneous Collections, in 1929, in volume 73, issue 6, pages 16

Published in Smithsonian Miscellaneous Collections, in 1929, in volume 73, issue 6, pages 17

Published in Smithsonian Miscellaneous Collections, in 1929, in volume 73, issue 6, pages 18

Published in Smithsonian Miscellaneous Collections, in 1929, in volume 73, issue 6, pages 19

Published in Smithsonian Miscellaneous Collections, in 1929, in volume 73, issue 6, pages 20-24

Published in Smithsonian Miscellaneous Collections, in 1929, in volume 81, issue 9, pages 1-30

Published in Smithsonian Miscellaneous Collections, in 1929, in volume 81, issue 13, pages 1-4