Large-scale maps of 265 New Jersey cities ranging from 1884 to the 1950s. These fire insurance maps show the outline of individual buildings along with related information. Some of the maps are also freely available via Princeton University; the starting point is an Excel spreadsheet. Map coverage varies by city.
A searchable collection of digital maps and aerial photographs of New Jersey from the Rutgers Community Repository. The collection may also be browsed by county or by any of a series of sample search terms.