, "The Four Wheel Drive story. A chapter in cooperative enterprise", Howard William Troyer, New York-Toronto-London 1954; "The Dilworth story. The biography of Richard Dilworth, pioneer developer of the Diesel locomotive", Franklin M. Reck, New York-Toronto-London 1954 : [recenzja] , Kwartalnik Historii Nauki i Techniki, 1957, 2, 2, s. 408-409