| Lewis W. Hine Messenger who is on duty from 8 A.M. to 6 P.M. down town. Witness E.N. Clopper. Location: St. Louis, Missouri. [National Child Labor Committee (U.S.)] 1910, 7 May Photographic print Library of Congress, Prints and Photographs Division Reproduction Number: LC-DIG-nclc-03483 (color digital file from b&w original print) LL/39690
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