One of a few remaining of John Randel's survey bolts to mark New York City street grid as part of the plan in the 1810s. This bolt was planned for 6th Avenue and 65th Street. Reference: Central Park Bolt from The 25 Best Nerd Road Trips by Popular Science.
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== {{int:filedesc}} == {{Information |description=One of a few remaining of John Randel's survey bolts to mark New York City street grid as part of the plan in the 1810s. This bolt was planned for 6th Avenue and 65th Street. Reference: [http://www.pop...