>>13044543 (pb)
Milk has had a rather constrained market
ever since they went away from glass bottles . . .
1970: $1.32 per gallon
President Lyndon B. Johnson signed the Child Nutrition Act in 1966, which authorized the Special Milk Program (SMP). The SMP reimbursed schools for milk they served. This meant schoolchildren all over the country drank more milk, which raised prices in the short term but also motivated dairy farmers to increase production. By 1970, milk prices had reached $1.32 per gallon, right on par with the rate of inflation.
https://www.tasteofhome.com/article/heres-the-price-of-milk-the-year-you-were-born/