Streets 56 Stores & factories 29 Stores and factories 26 Factories 15 History 10 Factory system 7 Philadelphia 7 more ... Stores and Factories 5 Glass 3 Labor and laboring classes 3 Mills 3 Sewage disposal 3 19th St., N and Brown St 2 Art, American 2 Child labor 2 Cleaning establishments 2 Columbia Ave., 1223-25 2 Employment 2 Factory and trade waste 2 Fires 2 German Americans 2 Histoire 2 History and criticism 2 Mills and mill-work 2 Outlet stores 2 Soap factories 2 Textile factories 2 Usines 2 Working class 2 19th St., N and Poplar St., S E cor 1 19th St., S and Catherine St 1 24th St., N and Brown St 1 26th St., N and Hare St 1 6th St., N 10-12 1 6th St., N and Quarry St 1 6th St., S 22 1 Adams St. at Frankford Ave 1 American essays 1 Américains d'origine allemande 1 Antiques 1 less ...