•From "Shepp's New York City Illustrated".
•Thomas Butler Gunn, The Physiology of New York Boarding Houses (1857).
•The Tenant Movement in New York City, 1904-1984, a pictorial history.
•Architecture in America: Private Residences, tenements.
•"Twenty Years at Hull-House" (Chicago) by Jane Adams (1912).
•Between a Rock and a Hard Place: History of Sweatshops.