Here are a couple certificates that I worked on during the 60's.  Popular Electronics and Electronics Illustrated magazines had sections devoted to "DXing," and both offered rewards for various levels of listening achievement.

The columns were always filled with station frequency lists, and early on, since I only had a standard AM radio, I payed close attention to the AM broadcast band (BCB) listings.  I can remember being amazed that some of the foreign stations listed where actually being heard in North America on these frequencies.  I was happy just to hear a station from Mexico.
 
Probably my best AM broadcast band DX catch from the Upper Peninsula of Michigan, was KNX in Los Angeles, California.  Of course, many of the stations I listened to were "clear channel" stations, but I did pick up a few smaller stations while their engineers performed frequency tests.

These tests were usually late on Sunday night or early Monday morning, and during these periods, the stations would run their maximum licensed power.  Sometimes the stations would turn off their directional antenna array and run omni, which would allow for better reception in the remote part of Michigan where I lived.

Enough rambling...  Below, are QSL card selections from both the standard AM broadcast band, and short-wave.  If you have any comments you would like to share, I'd be interested in hearing from you.

Since it takes a long time to download from any site that contains a lot of graphics, I'm using JavaScript, which allows for an overlapping window to appear with the QSL card you select from the menu below.  This should save time, as you only need to download the cards you're interested in.

Joe (AJ8MH)
ex: WPE8EUM, WN8AQL, WB5FCO and WJ5MH