Original oil and gas trade magazine vintage ad for AMERICAN ROLLER BEARING COMPANY. Main office and factory was located at 416-420 Melwood Avenue, Pittsburgh, PA. Pacific Coast Office: Edward D. Maltby Company., 1718 S. Flower St., Los Angeles, CA. Partner of Oil for 32 Years. Unique 1951 old oilfield petroleum equipment magazine advertisement would look sensational matted and framed. Approximate size 9 x 12 inches.