Memory MuckrakersVersion en ligne Memory Game par Jefferson County ESC she exposed the business practices of the head of industrial mogul John D. Rockefeller Ida Tarbell Jacob Riis Muckrakers first to write about the conditions of the urban poor, and eventually photographing them Upton Sinclair he published his most well-known work “The Jungle,” Term used to describe the investigative journalists of the early 1900s who exposed many problems and issues in urban America.