(1). ALL ABOUT GARDENING by  J. COUTTS and edited by G.H. PRESTON. In its compilation every care has been taken to ensure that all garden operations, that is, "the -how to do it" side of gardening are explained fully and lucidly. In addition instructive diagrams are included in the text to assist the reader when the written word is insufficient. Contains 4 plates in full colour and 150 photographic illustrations and diagrams. ISBN 0 7063 1109 4. First published 1954 this eighth impression published 1973 by Ward Lock.

(2). SANDERS' ENCYCLOPEDIA OF GARDENING revised by A.G.L.HELLYER -  a dictionary of cultivated plants etc; giving in alphabetical order the culture and propagation of hardy and half hardy plants, tress and shrubs, orchids, ferns, fruit, vegetables, hot house and greenhouse plants etc including their specific and common names. ISBN 0 600 44110 5. First published 1895. This twenty second edition, thirty fifth impression published 1972 for Collingridge Books by Hamlyn Publishing Group.