Blue 22-inch Samsonite carry-on with red tag

I was leaving the Barton Springs entrance near Zilker Park yesterday around 3pm when I realized my blue 22-inch Samsonite carry-on was gone. It's a sturdy polycarbonate case with a bright red luggage tag, a small dent on the bottom-left corner, and a tiny sailboat sticker on the front. The zipper pulls are silver and a bit worn from travel. Inside I had a travel journal and a framed photo of my grandmother—sentimental stuff—and I really need it back.