Gray tote bag with leather bottom

I lost my gray Herschel canvas tote bag yesterday around 3pm near Union Station's north entrance on Wynkoop Street, by the 16th Street Mall. It's a medium-sized tote with a black leather bottom and a tiny copper keychain with the initials 'JR' on the zipper pull. Inside the lining is bright blue with white stars, and there's a small frayed blue thread in the inner pocket that I use as a marker. The bag holds a photo album from my grandma and a pocket notebook with our travel plans; it means a lot to me, and I really need it back.