Polytechnic Institute, Salisbury Laboratories

Front:
Worcester, Mass.; Polytechnic Institute, Salisbury Laboratories ** 11

Back:
THE HUGH C. LEIGHTON CO., MANUFACTURERS, PORTLAND, ME., U. S. A.L354 شکوری MESSAGE MAY BE WRITTEN ON THIS SIDE.MADDRESS ONEY ON THIS SIE PM = T 1911 Ju Mirceste comple days – Mr.M.C. Barton, ла Cesiser- Warren An Boston- سنتے QUALITY ولار Mass. مرسى