Library of Congress - Sanborn Maps
https://www.loc.gov/collections/sanborn-maps/?fa=location:new+jersey
https://www.loc.gov/collections/sanborn-maps/?fa=location:new+jersey
Princeton University - Sanborn Maps of Jersey City, New Jersey
https://library.princeton.edu/libraries/firestone/rbsc/aids/sanborn/hudson/jersey-city.html
Rutgers University - Historical Maps of Hudson County NJ
http://mapmaker.rutgers.edu/HUDSON_COUNTY/oldHudson.html
New York Public Library - Digital Collections
Jersey City Public Library - NJ Room
https://www.jclibrary.org/locations-a-hours/main-library/new-jersey-room
