claim: Uranium uses the symbol U.
evidence: The Central Square Historic District is a historic district encompassing much of the central business district of Stoneham , Massachusetts .. historic district. historic district ( United States ). It includes the town 's largest concentration of 19th and early-20th century commercial architecture , in an area that developed in importance as a commercial center after the construction of the Andover-Medford Turnpike -LRB- now Main Street , designated Massachusetts Route 28 -RRB- .. Andover. Andover, Massachusetts. Medford. Medford, Massachusetts. Massachusetts Route 28. Massachusetts Route 28. The district was added to the National Register of Historic Places in 1990 .. National Register of Historic Places. National Register of Historic Places