I sent a reception report to the Voice of America in January after hearing a broadcast from their Greenville transmitter. They sent this QSL card:
On the back of the card:
The transmitter at the Morocco Transmitting Station houses ten 500 kw transmitters which beam Voice of America programs to Africa, Europe, the Middle East, and Central Asia.
This one was pretty easy and with a fast turnaround. I bet this thing didn't even get on a boat or a plane!