It's no wonder breastfeeding had to literally make a comeback among American mothers in the 1960s and 70s. If this picture is indicative of the baby prep classes taught throughout the country in the 1940s, it is truly remarkable that breastfeeding ever made a resurgence in this country.
Here is a photograph from October 1943 of a Washington, DC home economics class at Woodrow Wilson High School. Notice the baby bottles!
Library of Congress, Prints & Photographs Division, FSA-OWI Collection, [reproduction number,LC-USW3-039779-D DLC ] Photographer: Ester Bubley