Lost medium-sized dark blue rolling suitcase with travel stickers near the picnic area at Crystal Lake, Northern Michigan.

I lost my dark blue rolling suitcase while visiting Northern Michigan last weekend. I think I left it near the picnic area at Crystal Lake. It's medium-sized and has a few stickers from my travels on it. Inside, there are some personal clothes and a couple of books. I'm really hoping someone finds it as I have some important items in there.