
"They Stopped the Moving Sands" part of a letter to his agent Lurton Blassingame, outlining an article on how the USDA was using poverty grasses to protect Florence, Oregon from harmful sand dunes (11 July 1957); the article was never published, but did develop several of the ideas that led to "Dune"; as quoted in The Road to Dune (2005), p. 266
General sources