The 1962 Seattle World's Fair had postcards that were playable on record players. Some of them are still sold today, I was gifted one a few years back. https:/

The 1962 Seattle World's Fair had postcards that were playable on record players. Some of them are still sold today, I was gifted one a few years back. https://mcphee.com/products/seattle-worlds-fair-postcard-records https://mcphee.com/products/seattle-worlds-fair-postcard-rec...