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  2. File:1815 map of Ohio by Bourne & Hough r.jpg - Wikipedia

    en.wikipedia.org/wiki/File:1815_map_of_Ohio_by...

    The first map of Ohio to show all the actual surveys within the inhabited part of the state. A rare and early large map of Ohio. County boundaries tinted in color. Townships clearly shown. An extensive key is included detailing land ownership history and some land use. Northwest portion of state not surveyed but shows swamplands and plains.

  3. History of water supply and sanitation - Wikipedia

    en.wikipedia.org/wiki/History_of_water_supply...

    The first closed sewer constructed in Paris was designed by Hugues Aubird in 1370 on Rue Montmartre (Montmartre Street) and was 300 metres (980 ft) long. The original purpose of designing and constructing a closed sewer in Paris was less-so for waste management as much as it was to hold back the stench coming from the odorous waste water. [69]

  4. History of Ohio - Wikipedia

    en.wikipedia.org/wiki/History_of_Ohio

    [130] [131] A 2016 study on immigrants in Ohio concluded that immigrants make up 6.7% of all entrepreneurs in Ohio although they are just 4.2% of Ohio's population, and that these immigrant-owned businesses generated almost $532 million in 2014. The study also showed that "immigrants in Ohio earned $15.6 billion in 2014 and contributed $4.4 ...

  5. List of National Historic Landmarks in Ohio - Wikipedia

    en.wikipedia.org/wiki/List_of_National_Historic...

    This is a list of National Historic Landmarks in Ohio and other landmarks of equivalent landmark status in the state. The United States' National Historic Landmark (NHL) program is operated under the auspices of the National Park Service , and recognizes structures, districts, objects, and similar resources according to a list of criteria of ...

  6. Category:Ohio maps - Wikipedia

    en.wikipedia.org/wiki/Category:Ohio_maps

    This page is part of Wikipedia's repository of public domain and freely usable images, such as photographs, videos, maps, diagrams, drawings, screenshots, and equations. . Please do not list images which are only usable under the doctrine of fair use, images whose license restricts copying or distribution to non-commercial use only, or otherwise non-free images

  7. Ohio State Route 430 - Wikipedia

    en.wikipedia.org/wiki/Ohio_State_Route_430

    State Route 430 follows part of what was previously US 30 through the Mansfield area. The section of SR 430 from its western terminus in Ontario at SR 309 to its split from US 42 in eastern Mansfield follows the original western end of US 30S, while the portion from US 42 to the eastern terminus at SR 603 just west of Mifflin was part of mainline US 30. [3]

  8. List of the oldest buildings in Ohio - Wikipedia

    en.wikipedia.org/wiki/List_of_the_oldest...

    Building Image Location First built Use Notes Old Stone Fort (Cushocton, Ohio) Coshocton, Ohio: ca. 1679-1700s Unknown Believed to have been built by "d’ Iberville, LaSalle’s successor who built French forts in the Mississippi Valley from 1679- 1689.

  9. Elmore, Ohio - Wikipedia

    en.wikipedia.org/wiki/Elmore,_Ohio

    Elmore is located in what used to be known as the Black Swamp, a sprawling area of marsh that covered the majority of northwest Ohio, and was primarily inhabited by Native Americans until the 19th century. It is believed that the Portage River, which runs alongside the village, most likely derives its name from early explorers who were forced ...