1: Map of the Lower East Side of New York ca. 1910, Adrian Kitzinger and Ben Singer.

Source: 

Source: Adrian Kitzinger (cartography) and Ben Singer (research), “Nickeloden theaters on the Lower East Side, c. 1910,” in Entertaining America: Jews, Movies, and Broadcasting, eds. J. Hoberman and Jeffrey Shandler (Princeton: Princeton University Press, 2003), 25.