Before tape recorders made it easy (enough) to save a copy of your favorite song, clever music fans turned to records to duplicate music for their own use and help it spread. According to NPR, this was a particularly important tool for residents of the Soviet Union who, during the 1950s and earlier, used it for gaining access to banned music, particularly from the West. Back in May, NPR published an in-depth piece on the tools used for dissent in the Soviet Union, including these records.