Ancestry.com now has available Indexed Early Land Ownership and Township Plats from 1785-1898.The township plat maps in this database began with the Public Lands Survey in the United States initiated by the Land Ordinance Act of 1785. In order to sell or otherwise dispose of land in the public domain, the government first had to have the lands surveyed. The Public Lands Survey divided public lands west of the original colonies into a grid of townships and sections. A township was a square six miles to a side and contained 36 one-square-mile (or 640 acre) sections. These maps became the basis for property claims as public domain lands were transferred to private ownership.
This collection includes maps of townships in all or parts of Alabama, Illinois, Indiana, Iowa, Kansas, Mississippi, Missouri, Ohio, Oklahoma, Oregon, Washington, and Wisconsin. A typical plat map will cover one township, and the usual scale is two inches = one mile, though this collection also includes maps that show partial townships or sections within a township or maps created from multiple surveys or resurveys, so there can be multiple plats associated with a single township. Also, these maps were originally produced in triplicate, and for some states both the local office copy and the copy that was sent to the Government Land Office in Washington, D.C. (the “headquarters” copy) are included.
Township plat maps were prepared from the survey field notes taken by deputy surveyors and can include details such as roads or trails, lakes and rivers, forest or swampland, Indian lands, and improvements made on lands that had been settled before the survey took place. They also indicate township and section lines, section numbers, and acreage of holdings.
Information on a map can vary depending on when the survey was done and whether the lands were populated yet. Names of settlers, patentees, and claimants appear on lands where some settlement had taken place before the survey, and plats containing names of landowners in this collection have been indexed. Some maps also record land patent dates.
When researching the history of a house or property, don’t overlook this important database. If you do not have a personal subscription to ancestry.com, most major libraries have the library version available for their patrons to use at no charge.