Archived copy of Proceedings of the Indiana Academy of Science, 1909, Volume 19.
Archived copy of Proceedings of the Indiana Academy of Science, 1912, Volume 22.
Archived copy of Proceedings of the Indiana Academy of Science, 1919, Volume 29.
Archived copy of Proceedings of the Indiana Academy of Science, 1924, Volume 34.
Archived copy of Proceedings of the Indiana Academy of Science, 1925, Volume 35.
Archived copy of Proceedings of the Indiana Academy of Science, 1930, Volume 40.
Archived copy of Proceedings of the Indiana Academy of Science, 1931, Volume 41.
Archived copy of Proceedings of the Indiana Academy of Science, 1935, Volume 45.
Archived copy of Proceedings of the Indiana Academy of Science, 1936, Volume 46.
Archived copy of Proceedings of the Indiana Academy of Science, 1937, Volume 47.