This primary source comes from the Records of the National Oceanic and Atmospheric Administration.
National Archives Identifier:
6104929Full Citation: Storm Evacuation Map for New York City; 1973; Records of the National Oceanic and Atmospheric Administration, Record Group 370. [Online Version, https://docsteach.org/documents/document/storm-evacuation-map-for-new-york-city, May 4, 2024]