Nursery Stock Alpine and Herbaceous Plants 1929 -1930, R C Notcutt, Woodbridge, Suffolk
Ministry of Agriculture and Fisheries Bulletin No. 66, Insect Pests of Crops 1928 - 1931
Carnations, Perpetual Flowering, C Englemann Ltd, Saffron Walden, Essex
Bakers New Catalogue 1931, Bakers, Seed, Bulb and Flower Farms, Codsall, Near Wolverhampton
Hardy Plants including Alpines, Herbaceous Plants, Aquatics, Ferns, Grasses, Lilies, Herbs, etc, 1930 - 1931, G Reuthe, Fox Hill Hardy Plant Nursery, Keston, Kent
Ministry of Agriculture and Fisheries Bulletin No. 22, Practical Soil Sterilization, London
Laxton Bros. Strawberries & New Fruits, Laxton Bros, Bedford
Laxton's Fruit Trees & Small Fruits, Laxton Bros, Bedford
Gold Medal Shrubs and Rhododendrons, Shrub Catalogue 1931 - 1932, G Reuthe Ltd., Foxhill Hardy Plant Nursery, Keston, Kent
Catalogue of South African Seeds and Bulbs, January 1932, K C Stanford, Bloem Erf, Stellenbosch, South Africa