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Boyd, James I.C. (1986). Narrow Gauge Railways in North Caernarvonshire (Vol 3) The Dinorwic Quarry and Railways, The Great Orme Tramway and other rail systems. Oxford: The Oakwood Press. ISBN 0853613281.
Boyd, James I.C. (1986). Narrow Gauge Railways in North Caernarvonshire (Vol 3) The Dinorwic Quarry and Railways, The Great Orme Tramway and other rail systems. Oxford: The Oakwood Press. ISBN 0853613281.