Instructions on claiming prizes in person or by mail are available HERE. Players must redeem prizes larger than $25,000 by mail or at Lottery headquarters in the Montgomery Park Business Center, 1800 Washington Blvd., Suite 330 in Baltimore. The Lottery’s Claims Center in Baltimore is open by appointment only (no walk-ins). Click HERE to schedule an appointment. Winners can also drop off a winning ticket along with a completed claim form and copies of their photo ID and proof of Social Security/Tax ID number in the Lottery drop box in the Montgomery Park Business Center lobby.