. Official proceedings . Steel Car Forge Company PITTSBURGH, PENNSYLVANIA FORCINGS Dieter Lock and Holding Nuts STANDARD SAFETY NOTCORPORATION. 30 CHURCH ST. NEW YORK LEWIS IRON, The Iron Superior yy Penn Iron & Steel Company, Creighton, Pa. SOLE SALES AGENTS,Joseph T. Ryerson & Son, Inc., Chicago, 111. ALWAYS AT YOUR SERVICE— Locomotives, Cars, Bridges, Rails. Track Fastenings, etc., miut b« of the highest quality of materials and first class workmanship. Bulletin 20 and 21 Tell How P. T. L. Can Serve You. PITTSBURGH TESTING LABORATORY Inspection Engineers and ChemistsPITTSBURGH. PA.

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