Yerkes Observatory of the University of Chicago at Williams Bay, Wis

Front:
YERKES OBSERVATORY OF THE UNIVERSITY OF CHICAGO AT WILLIAMS BAY, WIS.

Back:
22985 TO ANYWHERE IN US, VIA AIRMAIL CO MADE IN U.S.A. BY E. C. KROPP CO., MILWAUKEE Halter A Wood &r 1050 Madison Ave SE Traved Rafida, Mich.