I don't know if you would consider this a good resource, but Dr. Harris talks in this hour long video about funding. Somewhere in there at around 35 minutes or so he shows the old food pyramid with recommendations with grains and vegetables and fruits at the base and meat and dairy higher up, then shows that despite the healthier foods being recommended, the great majority of the funding is for meat and dairy. Fruits and vegetables get hardly any.http://www.youtube.com/watch?v=z_qoZEYWzGg#t=51m40s
The Harvard school of nutrition was started with a 20 million dollar donation from the meat and dairy industry.
The purpose of the USDA is to promote meat and dairy. It was they who worked with one of those pizza places to come up with the cheese in the crust pizza in order to promote higher consumption of cheese. Etc.