Corridor Visitor Center, Worcester, Massachusetts (operated by the Blackstone Heritage Corridor, Inc.) Corridor cities and towns Note: In some cases, only a portion of the city or town is included in the Corridor. Massachusetts Rhode Island See also Greater Worcester Land Trust References External links Official NPS site Legislative History of National Corridor Blackstone Valley Institute (planning resources) Blackstone River Valley Corridor Keepers (preservation group) Highway of Commerce: The Blackstone Canal, Worcester Historical Museum, 2005 Historic American Buildings Survey 1986 establishments in the United States National Heritage Areas of the United States Protected areas established in 1986