Lost red binder containing a baseball card collection including a 1950 Mickey Mantle card near the picnic area in Decatur Park.

I lost my old baseball card collection while visiting the Decatur park last weekend, and it really hit me when I realized my favorite 1950 Mickey Mantle card was missing. I had the cards in a red binder that I left near the picnic area. If anyone has found it, I'd be so grateful to get it back. It holds a lot of sentimental value for me.