I noiticed the USDA has a section for historic Diwetary Guidelines on its website. I looked and apparently someone can't scan very well, because all of the Dietary Guidelines Pre-1943 are illegible [makes you wonder what they said.] But, interestingly enough the 1940s Guidlines:



Its funny that 60 years ago they were recomending lots of whole dairy and butter...But, now they claim Whole Dairy and Butter are bad for you and should be avoided. I imagine in the next 60 years they'll finally come around and realize Grain is bad for you, and we'll see another complete reversal of their Guidelines.