Years ago he had been given a stack of postcards and information cards by the USS Yorktown Association, so he turned them into QSL cards.
One card features a drawing of the USS Yorktown from before it was modified to enclose the bow portion of the ship. The reverse side lists some interesting statistics about the Yorktown during WW II.
The other card (formerly a USS Yorktown Association “Pay your dues” reminder postcard) has a Grumman F6F-3 Hellcat on the flight deck of the Yorktown, in front of the island.
While they aren’t old cards, I think they are a nice use of some cards that probably would have ended up in the dumpster.