“In 1943, during World War II, The USDA introduced a nutrition guide promoting the “Basic 7″ food groups to help maintain nutritional standards.”
– History of USDA Nutrition Guides
Fanatic Cook
“In 1943, during World War II, The USDA introduced a nutrition guide promoting the “Basic 7″ food groups to help maintain nutritional standards.”
– History of USDA Nutrition Guides
Fanatic Cook 
Butter had its own food group.
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I played “Patty Butter” in a nutrition play in first grade in the 1950s.
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