Hearing to review the future of next generation biofuels hearing before the Subcommittee on Conservation, Credit, Energy, and Research of the Committee on Agriculture, House of Representatives, One Hundred Eleventh Congress, first session, October 29, 2009

2007 census of agriculture. Volume 3, part 6 Special studies: on-farm renewable energy production survey (2009)

Hearing to review the costs and benefits of agriculture offsets : hearing before the Subcommittee on Conservation, Credit, Energy, and Research of the Committee on Agriculture, House of Representatives, One Hundred Eleventh Congress, first session, December 3, 2009

Fundamentals and farming : evaluating high gas prices and how new rules and innovative farming can help : hearing before the Committee on Agriculture, Nutrition, and Forestry, United States Senate, One Hundred Twelfth Congress, first session, March 30, 2011

Hearing to review pending climate legislation : hearing before the Committee on Agriculture, House of Representatives, One Hundred Eleventh Congress, first session, June 11, 2009

Food, feed, and fuel production today and tomorrow : field hearing before the Committee on Agriculture, Nutrition, and Forestry, United States Senate, One Hundred Tenth Congress, second session, August 18, 2008

Renewable energy programs in the 2008 farm bill

The impact of ethanol use on food prices and greenhouse-gas emissions

Energy and economic growth for rural America : hearing before the Committee on Agriculture, Nutrition, and Forestry, United States Senate, One Hundred Twelfth Congress, second session, February 15, 2012

Hearing to review low carbon fuel standard proposals hearing before the Committee on Agriculture, House of Representatives, One Hundred Eleventh Congress, first session, May 21, 2009