edited by H. J. Butcher ; with the assistance of H. B. Pont. edited by S. D. Lee, with the assistance of Bruce Peirano. edited by Thomas Lastrapes, with the assistance of John Bogart. edited by Thomas Sowell, with the assistance of Lynn D. Collins. edited by Margaret Walsh Young with the assistance of Susan L. Stetler. edited by R. W. Marsh, with the assistance of R. J. W. Byrde and D. Woodcock. edited by R. W. Marsh with the assistance of R. J. W. Byrde and D. Woodcock. edited by A. J. Walford, with the assistance of Anthony P. Harvey and H. Drubba. edited by Eric F. Wood, with the assistance of Andras Szaollosi-Nagy. edited by M. J. Blackie and J. B. Dent.