Readers enjoyed Criss Onan’s article about the NAB cartridge and the machines that played them (“These Were the Carts of Our Lives”). They sent the following letters. A catalog image of 99B Series ...

Many radio vets of the 1960s, ’70s and today (ok maybe not today) have a soft spot for the cart machine — while others would love to chuck them from the tops of tall buildings. For those who love and ...