 It is owned by MediaNews Group of Colorado.The main competitors to the "Sentinel & Enterprise" are the county's largest daily, the "Telegram & Gazette" of Worcester; on the west, "The Gardner News"; and on the east, Nashoba Publishing weeklies and "The Sun" of Lowell, also owned by MediaNews.Formed in 1973 by the merger of two newspapers covering adjacent cities, the daily traces its lineage back to the "Fitchburg Sentinel" (founded 1838) and "Leominster Enterprise" (1873).