Arg. Saesneg cyntaf = First English ed.: Llundain: Heinemann, 1996.
'Wdi'i seilio ar y 'Railway series' gan y Parch. W. Awdry' -back cover.
Tomos y Tanc : Deffra, deffra, tyrd i chwarae!. ISBN 0852842058. Published by Hughes a'i Fab in 1996. Publication and catalogue information, links to buy online and reader comments.