Excellent Primers and Summaries

Farm Bill Titles Summary
http://www.beefusa.org/uDocs/2002FarmBillTitles.pdf

Farm Commodity Programs: A Short Primer
http://www.nationalaglawcenter.org/assets/crs/RS20848.pdf

Farm Bill Highlights
http://www.fsa.usda.gov/pas/FullStory.asp?StoryID=1700

United States Farm Bills
http://www.nationalaglawcenter.org/farmbills/