Peretz Square, New York City Department of Parks and Recreation. Accessed July 12, 2007. "A sliver of Manhattan bounded by Houston Street, First Street and First Avenue, Peretz Square marks the spot where the tangled jumble of lower Manhattan meets the regularity of the Commissioners' Plan street grid."
It is not possible to tell from the map whether the "Garden" listed between 47th and 51st Streets and Fifth and Sixth Avenues was an existing feature or a planned one; possibly the former as there is no break indicated in the planned streets. See "Map of the city of New York and island of Manhattan as laid out by the commissioners appointed by the Legislature, April 3, 1807"New York Public Library Digital Collections (zoomable map) Haerlem Marsh, from 106th to 109th Streets between the East River and Fifth Avenue is shown in the map, but is not gridded, as the technology of the time would not allow it to be filled in until 1837. See Koeppel (2015), p.124
Hughes, C. J. (June 25, 2013) "East End Avenue: A Gated State of Mind", The New York Times. Accessed: April 8, 2016. "Into the early 20th century, East End was called Avenue B and York was called Avenue A, according to news reports of the time. They aligned with their downtown counterparts."
Malouin, Paul-Jacques (2004) "Miasma" in The Encyclopedia of Diderot and d'Alembert Collaborative Translation Project. Assarian, Jaclyn (trans.). Ann Arbor: Michigan Publishing
Logel, Jon (2016). Designing Gotham: West Point Engineers and the Rise of Modern New York, 1817-1898. Baton Rouge: Louisiana State University Press. p. 105. ISBN978-0-8071-6373-3. OCLC950724633.
