Add to your collection a framed 25.5" x 21" 1767 map of New York City. The map is based on the surveys of the British engineer, Bernard Ratzer, undertaken at the direction of Sir Henry Moore. Drawn in 1767, the survey was authorized in response to the Stamp Act Riots of 1765, motivated by British fears that the city might soon become a battleground. Needing a more detailed accounting of its layout, the British authorities commissioned Ratzer to survey and construct a map of the city.