Although not specifically stated, the incident in which Zalmie's mother dies appears to be the 1911 Triangle Shirtwaist Factory fire, a one of the worst industrial disasters in New York City's history. 146 garment workers, mostly immigrant women, died either in the fire, or by jumping from the windows of the 8th-10th floors because the doors were locked shut. The fire prompted legislative and union action to improve safety and working conditions in garment sweatshops.