Lost original 1990 holographic Charizard trading card at Riverfront Park, Spokane.

I lost an original 1990 holographic Charizard trading card while I was at Riverfront Park in Spokane. I had it with me for a card show, and I think I must have dropped it while chatting with other collectors. It means a lot to me since I've had it in my collection for years. If anyone finds it, I'd really appreciate it back.