One hundred years ago, farms only had two or three dairy cows, which produced just enough to feed their families. The cows were milked by hand twice a day. The milk went into pails and was taken to the house to be used.
A settler is hand-milking a dairy cow.
Fifty years ago, dairy farmers had 20 to 30 cows. The cows were milked into pails, then poured into milk cans, and sent to the processing plant. Today, the average dairy cow gives 30 litres of milk per day, which is 126 glasses of milk.