Archived copy of Proceedings of the Indiana Academy of Science, 2015, Volume 124, Number 1
Archived copy of Proceedings of the Indiana Academy of Science, 1900, Volume 10.
Archived copy of Proceedings of the Indiana Academy of Science, 1991, Volume 100, Numbers 1 - 2.
Archived copy of Proceedings of the Indiana Academy of Science, 1991, Volume 100, Numbers 3 - 4.
Archived copy of Proceedings of the Indiana Academy of Science, 1992, Volume 101, Numbers 3 - 4.
Archived copy of Proceedings of the Indiana Academy of Science, 2010, Volume 119, Number 1
Archived copy of Proceedings of the Indiana Academy of Science, 2012, Volume 121, Number 2