All Mary (Adventures of Mary Plain) by Rae, Gwynedd

Mary Plain V.I.P by Gwynedd Rae, 1961

Mary Plain and the Twins (Knight Books) by Rae, Gwynedd Paperback Book The Cheap

Mary Plain in Trouble by Gwynedd Rae - Paperback - 1972

Mary Plain In Trouble By Gwynedd Rae, Janina Ede 1972 Knight Books PB

Mary Plain in Town Gwynedd Rae, Illust. Irene Williamson, 1943

Mary Plain's Whodunit By Gwynedd Rae, Janina Ede 1973 Knight Books PB

Unread Gwynedd Rae ~ Mary Plain and the Twins ~ Red Knight, 1970