If someone tells you that you have a face made for radio, slap him/her upside the head and then go wrap yourself into the fetal position and sob. If someone tells you that you have graphic design sense made for radio hug him/her and then pitch a major feature piece on yourself to Print Magazine.
In a process that would send chills down the spine of any ADD-afflicted technophile today, people used to confirm radio transmissions with Bauhaus-y post cards, or in more proper terms, QSL cards.
May Day! May Day! Two months later: Message Received.
Not efficient. Very beautiful.
The examples here are all for sale on ebay for less than $10.