Gray quilted throw blanket found near Union Station

I found a gray quilted throw blanket this afternoon around 2:15pm outside Union Station's main entrance on 18th Street, by the Amtrak platform. It's about 60x70 inches, thick quilted fabric with darker gray piping along the edges, and a bit of pilling from use. In the lower-right corner there's a small blue embroidery patch with the initials HL, plus a faint coffee ring mark in the center. The blanket looks well-loved, clean, and has no strong odors. I hate to think someone might be missing it after a long day—if you recognize these details, please reach out so we can help reunite you with it.