When his "Outlook" piece was completed, Poole stayed on the scene as the volunteer press agent for the union of the striking slaughterhouse workers. The job put him in touch with the young Upton Sinclair, who was on the scene to do research for what he hoped would become the ""Uncle Tom's Cabin" of the Labor Movement," published in 1906 as "The Jungle." Poole's close friends in New York included two others who would travel to Imperial Russia as correspondents in 1905 — the socialists Arthur Bullard and William English Walling.