This is a guide to finding sources for NYC-related topics. In addition to the usual places to search, here's some NYC-specific resources. Please add to this is if you know of any more.

https://www.nypl.org/. Anybody can search the general or research catalogs, but you will need a NYPL library card to check out materials. Any NYC resident (13 years or older) can get a card for free. You can request that any circulating material be delivered to your local branch where you can pick it up and return it.

Research material does not circulate and must be viewed at the branch where it is stored, although (mind-bogglingly) your local branch may be able to get you the same item on inter-library loan upon request. If you have an exact enough citation, they can scan some items and email you the scan. The librarians are extremely helpful with research questions when contacted via email.

You can also get free access to Proquest via the NYPL website if you don't already have it through WP:TWL.

https://loc.gov/. There's substantial coverage of NYC topics in their on-line database. Especially valuable is their Chronicling America collection which has extensive holdings of old NYC newspapers, available as digitized page images. As with the NYPL, the LOC librarians provide expert and willing assistance with research questions.

Don't overlook your alma mater. Many colleges and universities offer their alumni free access to their libraries. And many schools in NYC have interesting local collections. So if you went to school here, it might be worth enquiring if you can get library access.

Not very well organized, but there's a bunch of stuff, mostly about the Bronx. For example, their Bronx Architecture] project.

Fordham Research Commons has a variety of collections of local interest. https://research.library.fordham.edu/

There's a lot of information in the NYC archives. It's not well organized, but given the depth and breadth of the collection, it's worth the effort to search. Includes a collection of 720,000 photos taken in two sets (one in the 1940s, another in the 1980s) to document every building in the city. The Municipal Archives and Library are is available to researchers by appointment.

• https://www.nyc.gov/site/records/index.page. Tons of stuff, including a treasure trove of historical photos of the city.

• https://nycma.lunaimaging.com/luna/servlet Historical photographs.

Available via Columbia University Digital Collections, this is an excellent source for historical research on individual buildings and real estate deals in NYC between 1868 and 1922. If it was bought, sold, or built during those years, there's likely at least a boilerplate notice, and possibly much more.

A graphical interface to the NYC Department of Finance's database. Lets you look up who owns every square inch of the city, and associated information like tax records, assessments, mortgages, violations, etc. If you're writing about a building, it's worth taking a look here to see if anything interesting falls out. https://propertyinformationportal.nyc.gov/

While often not meeting the requirements of WP:RS, these are interesting sites and great starting points for researching buildings, places, and events in NYC history. Often the articles on these blogs will contain citations to other sites, which may in turn be RS, so certainly worth looking at.

Self-described as "The stories behind the buildings, statues and other points of interest that make Manhattan fascinating." https://daytoninmanhattan.blogspot.com/

A well known and respected blog which researches quirky bits of NYC history. https://forgotten-ny.com/

In addition to these specific sources, no historical research project would be complete with hitting newspaperarchive.com and newspapers.com, both of which are available via WP:TWP. Although originally intended as resources for genealogical research (i.e. exploring your family tree) they both index many historical NYC papers.

https://www.nytimes.com/. In addition to their national and world coverage, the NYT has extensive coverage of local topics, with on-line archives going back to the 1800's. Their archives are an excellent resource for articles about NYC history. Some archival material is available to anybody, some is behind their paywall and requires a NYT subscription to access. If you don't find what you're looking for, also try Proquest, which inexplicably sometimes finds NYT material which their own internal archive doesn't show.

https://www.nydailynews.com/. Major daily newspaper. Doesn't have the prestige of the NY Times, but still a WP:RSP and a more NYC-centric focus. Behind a paywall, but also seems to be indexed by newspapers.com.

https://nypost.com/. NYC's third big paper, founded in 1801. Once well respected, in the modern era the Post's reputation as a WP:RSP has declined and facts should be corroborated against better sources.

https://brooklyneagle.com/ current events from Brooklyn since 1996.

https://www.newspapers.com/paper/the-brooklyn-daily-eagle/1890/. Original newspaper now defunct. Archives via newspapers.com for years 1841 to 1955.

https://www.nyhistory.org/. The NYHS archives are indexed via the NYU special collections website (https://specialcollections.library.nyu.edu/search/). Once you have found the material you wish to view, you need to make an appointment to see it in person at the NYHS building (W 77th St and Central Park West). There's no charge for access, but it may take a while to get a research appointment. The trip is worth it just to see the building.

https://westchesterhistory.com/. What is now the Bronx was part of Westchester County until 1873 (Western portion) or 1895 (Eastern portion). Thus, the WHS has significant material in their archives about what's now the Bronx. Extremely useful for researching Bronx historical topics.

https://historicpelham.blogspot.com/. As with the Westchester Historical Society, lots of good material here on pre-consolidation Bronx history. While ostensibly a blog, this is run by a professional historian, so probably a WP:RS.

https://queenshistoricalsociety.org/. Library & Collections only available by appointment. No online catalog.

https://bronxhistoricalsociety.org/ They have a fair amount of material digitized and available on-line. Much more that's not digitized and available to researchers by appointment.

https://www.mcny.org/. Particularly useful for contemporary material, but also has a deep archive of NYC historical artifacts. Searchable on-line. Unfortunately, their photo reproduction policies don't play well with commons, and their web site states they do not handle research enquiries.

https://www.nytransitmuseum.org/exhibits-collections/collections/. Lots of stuff about the history of transit in NYC. They have a research department and allow researchers access to their archives via appointment. Unfortunately, they don't have commons-compatible licensing terms, but still a useful resource.

https://www.urbanarchive.org/cities/nyc collection of public domain images from various GLAM sites. Linked items use Urban Archive ID (P9431) in Wikidata.

These specific sources may also be of use to editors improving articles about New York City-related topics.

• Historic buildings
  • Diamonstein-Spielvogel, Barbaralee (2011). The Landmarks of New York (5th ed.). Albany, New York: State University of New York Press. ISBN 978-1-4384-3769-9.
  • Federal Writers' Project (1939). New York City Guide. New York: Random House. ISBN 978-1-60354-055-1. (Reprinted by Scholarly Press, 1976; often referred to as WPA Guide to New York City.)
  • Jackson, Kenneth T., ed. (1995). The Encyclopedia of New York City. New Haven: Yale University Press. ISBN 0300055366.
  • Jackson, Kenneth T., ed. (2010). The Encyclopedia of New York City (2nd ed.). New Haven: Yale University Press. ISBN 978-0-300-11465-2.
  • New York City Landmarks Preservation Commission; Dolkart, Andrew S.; Postal, Matthew A. (2009). Postal, Matthew A. (ed.). Guide to New York City Landmarks (4th ed.). New York: John Wiley & Sons. ISBN 978-0-470-28963-1.
  • Stern, Robert A. M.; Fishman, David; Tilove, Jacob (2006). New York 2000: Architecture and Urbanism Between the Bicentennial and the Millennium. New York: Monacelli Press. ISBN 978-1-58093-177-9. OCLC 70267065. OL 22741487M.
  • Stern, Robert A. M.; Gilmartin, Gregory; Massengale, John Montague (1983). New York 1900: Metropolitan Architecture and Urbanism, 1890–1915. New York: Rizzoli. ISBN 0-8478-0511-5. OCLC 9829395.
  • Stern, Robert A. M.; Gilmartin, Patrick; Mellins, Thomas (1987). New York 1930: Architecture and Urbanism Between the Two World Wars. New York: Rizzoli. ISBN 978-0-8478-3096-1. OCLC 13860977.
  • Stern, Robert A. M.; Mellins, Thomas; Fishman, David (1995). New York 1960: Architecture and Urbanism Between the Second World War and the Bicentennial. New York: Monacelli Press. ISBN 1-885254-02-4. OCLC 32159240. OL 1130718M.
  • Stern, Robert A. M.; Mellins, Thomas; Fishman, David (1999). New York 1880: Architecture and Urbanism in the Gilded Age. Monacelli Press. ISBN 978-1-58093-027-7. OCLC 40698653.
  • White, Norval & Willensky, Elliot (2000). AIA Guide to New York City (4th ed.). New York: Three Rivers Press. ISBN 978-0-8129-3107-5.
  • White, Norval; Willensky, Elliot; Leadon, Fran (2010). AIA Guide to New York City (5th ed.). New York: Oxford University Press. ISBN 978-0-19538-386-7.
  • Wurman, Richard Saul (2000), Access New York City, New York: HarperCollins, ISBN 0-06-277274-0
• Brooklyn
  • Manbeck, John B. (2008), Brooklyn: Historically Speaking, Charleston, South Carolina: The History Press, ISBN 978-1-59629-500-1
  • Jackson, Kenneth T.; Manbeck, John B., eds. (2004). The Neighborhoods of Brooklyn (2nd ed.). New Haven, Connecticut: Citizens for NYC and Yale University Press. ISBN 0-300-10310-7.
• Central Park
  • Rosenzweig, Roy & Blackmar, Elizabeth (1992). The Park and the People: A History of Central Park. Cornell University Press. ISBN 0-8014-9751-5.
• Churches
  • Dunlap, David W. (2004). From Abyssinian to Zion: A Guide to Manhattan's Houses of Worship. New York: Columbia University Press. ISBN 0-231-12543-7.
• Early skyscrapers
  • Landau, Sarah; Condit, Carl W. (1996). Rise of the New York Skyscraper, 1865–1913. New Haven, CT: Yale University Press. ISBN 978-0-300-07739-1. OCLC 32819286.
• Geography
  • Kadinsky, Sergey (2016). Hidden Waters of New York City: A History and Guide to 101 Forgotten Lakes, Ponds, Creeks, and Streams in the Five Boroughs. New York, NY: Countryman Press. ISBN 978-1-58157-566-8.
  • Steinberg, Ted (2010). Gotham Unbound: The Ecological History of Greater New York. New York: Simon & Schuster. ISBN 978-1-476-74124-6.
• History
  • Burrows, Edwin G. and Wallace, Mike (1999). Gotham: A History of New York City to 1898. New York: Oxford University Press. ISBN 0-195-11634-8.
  • Trager, James (2003), The New York Chronology, New York: HarperCollins, ISBN 0-06-074062-0
  • Wallace, Mike (2017), Greater Gotham: A History of New York City from 1898 to 1919, New York: Oxford University Press, ISBN 978-0-19-511635-9
• Manhattan
  • Cohen, Paul E. and Augustyn, Robert T. (1997). Manhattan in Maps: 1527-1995. New York: Rizzoli International Press. ISBN 0847820521.
  • Feirstein, Sanna (2001). Naming New York: Manhattan Places & How They Got Their Names. New York: New York University Press. ISBN 978-0-8147-2712-6.
  • Moscow, Henry (1978). The Street Book: An Encyclopedia of Manhattan's Street Names and Their Origins. New York: Hagstrom Company. ISBN 978-0-8232-1275-0.
• Morningside Heights, Manhattan
  • Dolkart, Andrew S. (1998). Morningside Heights: A History of its Architecture and Development. New York: Columbia University Press. ISBN 978-0-231-07850-4. OCLC 37843816.
• Subways
  • Raskin, Joseph B. (2013). The Routes Not Taken: A Trip Through New York City's Unbuilt Subway System. New York, New York: Fordham University Press. doi:10.5422/fordham/9780823253692.001.0001. ISBN 978-0-82325-369-2.
• Urbanization
  • Ballon, Hilary, ed. (2013). The Greatest Grid: The Master Plan of Manhattan 1811-2011. New York: Museum of the City of New York and Columbia University Press. ISBN 978-0-231-15990-6.
  • Jackson, Kenneth T. (1985). Crabgrass frontier: The suburbanization of the United States. New York: Oxford University Press. ISBN 0-19-504983-7. OCLC 11785435.
  • Koeppel, Gerard (2015). City on a Grid: How New York Became New York. Boston: Da Capo Press. ISBN 978-0-306-82284-1.
  • Eldredge, Niles and Horenstein, Sidney (2014). Concrete Jungle: New York City and Our Last Best Hope for a Sustainable Future. Berkeley, California: University of California Press. ISBN 978-0-520-27015-2.