The first map of Monica Edwards' Punchbowl Farm appeared on the endpapers of Punchbowl Midnight in 1951. The artist was not credited. This map was used for the next three Punchbowl Farm books until 1956 when Frenchman's Secret was published.

Charles Green produced the maps for this book.
Much of the action takes place at an old mill not far from the farm, and the book was graced with two maps. One of The Mill House and a second version of the map of Punchbowl Farm's land, showing changes over the time lapsed since the first and including a new discovery.

His endpaper map of the farm was used from then in the 'Punchbowl' books until he drew a new version with an attractive picture of the farm house for the last farm book The Wild One.

His first version is the map most commonly found in the Armada paperback edtions of the books.

His illustrations appear in The Boys' Country Book Collins 1955 and in the Collins Magazine Annual Vol 4 1951 in which, coincidentally, the first farm book was serialised.