W49th parallel northWBilby towerWCongress LandsWCongress Lands East of Scioto RiverWCongress Lands North of Old Seven RangesWCongress Lands West of Miami RiverWFairfax LineWGeneral Land OfficeWJefferson PierWLand Ordinance of 1785WMason–Dixon lineWOhio LandsWPenn–Calvert boundary disputeWPublic Land Survey SystemWSection (United States land surveying)WSeven RangesWSeven Ranges TerminusWStar Gazers' StoneWSurvey townshipWSurveying in North AmericaWSurveyor General of the Northwest TerritoryWUnited States Military District
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