Between the mid-1940s and mid-'70s, American schoolchildren were routinely shown filmstrips on topics ranging from the importance of cleanliness to the job of a welder. In his new book Change Your Underwear Twice a Week, author Danny Gregory revisits the wisdom these films offered. He speaks with NPR's Renee Montagne.
Copyright 2022 NPR. To see more, visit https://www.npr.org.
