Maple-Union Corners is a historic district centered at the intersection of Maple and Union Streets in Springfield, Massachusetts. The area is prominent as the location of the Springfield Female Seminary building (77 Maple Street, built 1832, now in residential use), and for the distinctive homes of several of Springfield's prominent 19th century citizens. The house at 83 Maple Street, was first owned by Solomon Merrick, inventor of the monkey wrench, and was later owned by , the fourth mayor of Springfield. Townhouses at 76-78 and 80-84 Maple Street comprise the rest of the district; owners or occupants included Francis Fuller, owner of the Fuller Block, and Edmund Chapin, president of the John Hancock National Bank. The district was listed on the National Register of Historic Places in 19