Framed Montana landscape watercolor

I found this framed Montana landscape watercolor this afternoon around 2:15pm, in front of the Yellowstone Art Museum on N 27th St in Billings. It's a 12x16 inch piece, framed in black with a slim gold inner edge, and the paper has a soft, icy blue sky with green pines and a snowy ridge. There's a tiny signature under the bottom right that reads 'L. Hartman 2019' and a small scratch along the bottom edge of the frame. The glass is clean and the colors are bright—overall in good condition. It's clearly an Art & Decorative Item. If you're missing something like this, I'd love to help get it back to you; we can arrange a pickup near the museum or meet up at a nearby cafe.