Stori yn seiliedig ar gymeriad go iawn = Story based on a real life character.
Fersiwn Saesneg o'r stori hon ar gael = English version of this story avaiable: A journey in the company of a postman.
Taith yng nghwmni postmon by Catrin Stevens. ISBN 9781845213022. Published by CAA in 2008. Publication and catalogue information, links to buy online and reader comments.