Please follow https://unwritten-record.blogs.archives.gov/2020/10/27/travelling-back-in-time-to-the-new-york-city-of-1767-1768-via-the-ratzen-map/.

Please follow https://unwritten-record.blogs.archives.gov/2020/10/27/travelling-back-in-time-to-the-new-york-city-of-1767-1768-via-the-ratzen-map/.