Gardening by Mail 2: A Source Book : BY BARBARA J. BARTON (Tusker Press; 1987, with updates)

THIS IS SUCH a perfect idea, filling such an obvious need, that I wonder how gardeners ever lived without it. Barton has compiled what amounts to the gardening book of lists: seed and plant suppliers, cross-referenced by a list of kinds of plants and seeds and where available, further cross-referenced by geography; of gardening magazines, libraries, garden-equipment suppliers, books, societies and more. Best of all, Barton updates her lists quarterly; these updates (at $1 each) are cumulative, so readers need not worry about back issues. The book is $19.50 postpaid from Tusker Press, P.O. Box 1338-L, Sebastopol, Calif. 95473.