Lost small collection of rare vintage baseball cards in a black protective case at the local park in Youngstown.

I lost a small collection of rare vintage baseball cards while I was at the local park in Youngstown last weekend. The cards were in a black protective case and included players from the 1950s and 60s. They hold a lot of sentimental value, and I'm really hoping someone found them or saw someone with a similar case. If you could return them, I'd be incredibly grateful!