Physical Laboratory, Lehigh University

Front:
G 6122 Physical Laboratory, Lehigh University, South Bethlehem. Pa, TI 300 whice Photo. Only, Copyright 1905 by the Rotograph Co. versiſten gelmes

Back:
The Rotograph Co., N. Y., City. (Germany.) Leb COUPERSBUR 11 AM 1909 PA. Miss Marie Wingard boatesville Chester Co, Pa 50 ONE CENT