FAVORITE LINKS
The Bloomingdale Neighborhood History Group
Jim Mackin is one of the co-leaders
https://www.upperwestsidehistory.org/
https://bloomingdalehistory.com/
Local history and a database of 1000 buildings
Daytonian in Manhattan, Tom Miller
A superb collection of detailed histories of individual buildings in Manhattan
http://daytoninmanhattan.blogspot.com/
The New York Historical
A treasure chest, visit the Patricia D. Klingenstein Library, check out the digital collections
The New York Public Library
Check out their digital collections, especially maps and atlases and photographs
https://www.nypl.org/collections/nypl-recommendations/guides/fire-topo-property-maps
The Museum of the City of New York
Check out the digital collections, especially the photographs
New York City Municipal Archives
Photographs of most every building in New York City ca.1940, the link here facilitates searching on a map
https://1940s.nyc/map/photo/nynyma