Boss Jock Sam Riddle Postcard

This is a promotional postcard for Sam Riddle. The back of the postcard reads:

KHJ “Boss Jock” Sam Riddle
If you get the feeling Sam is everywhere ... that’s because he is. Hollywood A Go Go and Ninth Street West are the swinginest on TV and when not on Boss Video Sam’s rockin’ on KHJ. You know he’s a gas ‘cause the stars are making it a point to pick up on Riddle. And so do you!
KHJ Boss Jock Sam Riddle Postcard