Lower East Side - Wikipedia
Orchard Street - Wikipedia
Bialystoker Synagogue - Wikipedia
File:1st Avenue and Houston Street, Lower East Side Manhattan, New York (7237382666).jpg - Wikimedia Commons
Lower East Side Tenement Museum - Wikipedia
SoHo - Wikipedia. The bottom of the History section contains a brief description of the area as it is now.
Radish — New York Notes
Lower East Side - Wikipedia
File:KatzGentrificationLES.JPG - Wikipedia
The Lower East Side: Where Historic Tenements Meet Glassy Towers - The New York Times
File:Lower East Side New York City October 1995 04.jpg - Wikimedia Commons
Lower East Side - Wikipedia
Lower East Side - Wikipedia
East Side (Milwaukee) - Wikipedia
Review of Tenement Museum New York, New York - AFAR