Level is an unincorporated community in southern Harlan Township, Warren County, Ohio, United States, which in the 19th century was a station on the Marietta and Cincinnati Railroad and had its own post office, since closed. According to the U.S. Geographic Names Information System (GNIS), an alternate name for this community is Windsor.
- U.S. Geological Survey Geographic Names Information System: Windsor
- The History of Warren County, Ohio: Containing a History of the County ; Its Townships, Towns ; General and Local Statistics. W.H. Beers & Company. 1882. p. 678.
- "Warren County". Jim Forte Postal History. Retrieved 17 January 2016.
- "Warren County, Ohio Place Names". Warren County Genealogical Society. Archived from the original on 13 March 2018. Retrieved 13 March 2018.
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