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Harold Holcroft (c1851-1931) of Thomas Holcroft and Sons.
1919 Wrote a series of articles for The Engineer on the "Metamorphosis of The Locomotive".
1931 Obituary 
The death has also taken place at his residence in Wolverhampton in his eightieth year, of Mr. Harold Holcroft, managing director and chairman of Thomas Holcroft and Son, Ettingshall Foundry, near Wolverhampton. Mr. Holcroft, who had resided in Wolverhampton all his business life, had taken a keen interest in many Midland concerns. He was a director of Ruffords, Ltd., fire-brick manufacturers, Stourbridge; chairman of the Bilston Gas Company, and a director of the Willenhall Gas Company.