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Boyd, James I.C. (1989) [1972]. Narrow Gauge Railways in South Caernarvonshire - Volume 2: The Welsh Highland Railway. Headington: The Oakwood Press. ISBN 978-0-85361-383-1. OCLC 145018679.
Boyd, James I.C. (1989) [1972]. Narrow Gauge Railways in South Caernarvonshire - Volume 2: The Welsh Highland Railway. Headington: The Oakwood Press. ISBN 978-0-85361-383-1. OCLC 145018679.