Steinhauer, Jennifer. "F.Y.I.", The New York Times, October 10, 1993. Accessed August 23, 2021. "Marble Hill's Exile Q. Why is there a small piece of Manhattan in the Bronx?.... A. Marble Hill was originally attached to the northern part of Manhattan, but was severed in 1895 when the city deepened and straightened the waterway that connected the Hudson River to what was known as Spuyten Duyvil Creek (Dutch for "in Spite of the Devil," thought to be a reference to the trouble it took to cross it).... Around 1914, Spuyten Duyvil Creek was filled in and the area became physically a part of the Bronx, but it remained politically part of Manhattan."
Satow, Julie. "'Historic' Doesn't Rule Out 'New'", The New York Times, May 9, 2013. Accessed August 1, 2016. "But although the character of the tenants has shifted, the historic neighborhood, which some call NoMad (for North of Madison Square Park) and which is bounded by 25th and 29th Streets, between Madison Avenue and Avenue of the Americas, has seen very little new construction since the Great Depression."