Eastern Black Walnut: Potential for Commercial Nut Producing Cultivars—William Reid
Magness, J.R., G.M. Markle, C.C. Compton. 1971. Food and feed crops of the United States.
Handbook of Energy Crops—James A. Duke. 1983. unpublished.
Black Walnut Toxicity —Cooperative Extension Service, Purdue University, West Lafayette, Indiana. PDF version
Outside links:
Walnuts, Juglans spp.
Black walnut—list of publications from Cooperative Extension Service, Purdue University, West Lafayette, Indiana.
Intercropping Black Walnut in Oregon's Willamette Valley
Walnut Crop Information University of California Davis