Archived copy of Proceedings of the Indiana Academy of Science, 1938, Volume 48.
Archived copy of Proceedings of the Indiana Academy of Science, 1937, Volume 47.
Archived copy of Proceedings of the Indiana Academy of Science, 1936, Volume 46.
Archived copy of Proceedings of the Indiana Academy of Science, 1935, Volume 45.
Archived copy of Proceedings of the Indiana Academy of Science, 1931, Volume 41.
Archived copy of Proceedings of the Indiana Academy of Science, 1930, Volume 40.
Archived copy of Proceedings of the Indiana Academy of Science, 1925, Volume 35.
Archived copy of Proceedings of the Indiana Academy of Science, 1924, Volume 34.
Archived copy of Proceedings of the Indiana Academy of Science, 1919, Volume 29.
Archived copy of Proceedings of the Indiana Academy of Science, 1912, Volume 22.