المساهمون: Consumers' League of New York City., National Child Labor Committee (U.S.), New York Child Labor Committee.

مصطلحات موضوعية: Child labor -- New York (State) -- New York -- Pictorial works., Tenement houses -- New York (State) -- New York -- Pictorial works., Home labor -- New York (State) -- New York -- Pictorial works., Child labor -- Exhibitions.

المؤلفون: Saadi-Varchmin, Beatrix.

المساهمون: Varchmin, Jochim., Herzig, Arno., Bundesanstalt für Arbeitsschutz (Germany)

مصطلحات موضوعية: Child labor -- Exhibitions., Children -- Germany -- Social conditions -- Exhibitions., Children -- Developing countries -- Social conditions -- Exhibitions.