California walnut industry. Commercial importance, longevity, pollination, varieties, planting, soil, propagation, budding, grafting, pruning, harvesting; enemies of the walnut, and remedies; area of walnut culture in state, in America, and in Europe, etc. - Lelong, B. M., 1856-1901. (Sacramento, A. J. Johnston, Superintendent State Printing, 1896)
"Author's edition, from Report of State board of horticulture for 1895-6."
Also available in digital form on the Internet Archive Web site.
Keywords: Walnut