Blue US passport in black travel sleeve

I lost my blue US passport yesterday around 3pm near the North Market entrance on Market Street in downtown Columbus. It's the standard US passport book, about the size of a credit card when closed, tucked inside a black faux-leather travel sleeve with a small red zipper pull. The passport itself is a bit worn, with a coffee stain on the back cover and a tiny crease on the lower-right corner. The sleeve has a faint sticker from a local volunteering event on the outside. This passport is essential for my upcoming trip next month, and I really need it back.