E. G. Conklin - Drexel University, Academy of Natural Sciences of Drexel University
J. C. Morris - Drexel University, Academy of Natural Sciences of Drexel University
D. G. Brinton - Drexel University, Academy of Natural Sciences of Drexel University
H. C. Mccook - Drexel University, Academy of Natural Sciences of Drexel University
H. Skinner - Drexel University, Academy of Natural Sciences of Drexel University