 The district runs from the railroad tracks on Main Street and four blocks west to the fire station on 13th and one block north and south of Main. The city of Collinsville said businesses in a historic district can apply for funding to make improvements to their buildings, but any changes have to be approved by a committee to make sure it doesn't hurt the building's historical integrity. Ben Morgan, 1023 KRMG, Tulsa's News and Talk.