The Youngstown Sheet and Tube Company was incorporated in Ohio on Nov. 23, 1900 and grew to be one of the six largest basic steel companies in the U.S. On May 28, 1969 it became a subsidiary of the Lykes-Youngstown Corporation and on May 11, 1976 of the Lykes Corporation. In 1978, Lykes Corporation was acquired by LTV Corporation. LTV Corp. already owned Jones & Laughlin Steel Corporation, into which Youngstown Sheet and Tube was merged. LTV Corp. acquired Republic Steel Corp. in 1984, and Republic and Jones & Laughlin were consolidated at LTV Steel Company. Most Youngstown and Jones & Laughlin facilities were abandoned in favor of Republic's.
From the description of A Chicago District perspective of the history of the Youngstown Sheet and Tube Company, 1900-1969 (Behind the scenes), 1991 : typescript. (Hagley Museum & Library). WorldCat record id: 122396938
