The listing, Amateur Radio Cards has ended.
A QSL card or amateur radio card is a written confirmation between two amateur radio stations or a two-way radio communication.
They were sent through the mail like a postcard to acknowledge reception. The card included callsign, frequency, date, etc.
These cards are dated between 1949-1954. There are 11 cards. These are misc states such as Tennessee, Alabama, Colorado, Utah, Vermont, South Carolina, Wyoming and Connecticut.
The original postage is still on all cards.