Before revision: Mechanical street sweeper by Joseph Whitworth, 1846Drawing by Marguerite Martyn of children following a street-cleaning wagon dispensing water to clear streets of debris in St. Louis, Missouri, 1914Street sweeper in Paseo de la Reforma in Mexico City, 2004upMonument of street sweeper in St. Petersburg, Russia, 2006-2009 A compact street sweeper tackles litter in Mexico City, 2007.
After revision: A compact street sweeper tackles litter in Mexico City, 2007.