G. Dr. Rubel, Zurich, Switzerland* Photo 
taken at Ithaca, N. Y. 1926. 
H. Dr. B. L. Robinson, Cambridge, Mass. Photo 
taken at Ithaca, H. Y* 1926. 
I. Dr. D. Reddick, Ithaca, If. 7, Photo tek 
at Ithaca, N. Y. . 1926. 
