In the 1960s, butter was made through a long process of collecting milk from cows in milk cans. The cream from the top of the milk was then churned in a plunger churn for a long period of time until butter clumps began to form. This document describes how butter was made on farms in the 1950s and 1960s, including collecting milk, separating cream, and churning it into butter using tools like milk cans and plunger churns.