Historical interrelationships between population settlement and farmland in the conterminous United States, 1790 to 1992

http://biology.usgs.gov/luhna/chap2.html

Chapter from Land Use History of the North America on the results of a study to understand the interactions of population growth, urbanization, and agricultural activity over time.

by Maizel, Margaret; White, R. Denis; Gage, Stuart; Osborne, Leon; Root, Ralph; Stitt, Susan; Muehlbach, George; Sisk, Thomas D. (Editor); and Land Use History of North America Project (Sponsor)