Stockyards Industrial Park. The neighborhood to the west and south of the industrial park is still known as Back of the Yards, and is still home to a thriving immigrant population. Gate A remnant of the Union Stock Yard Gate still arches over Exchange Avenue, next to the firefighters' memorial, and can be seen by those driving along Halsted Street. This limestone gate, marking the entrance to the stockyards, survives as one of the few relics of Chicago's heritage of livestock and meatpacking. The bovine head decoration over the central arch is thought to represent "Sherman", a prize-winning bull named after John B. Sherman, a founder of the Union Stock Yard and Transit Company. The gate is a designated U.S. National Historic Landmark. Impact The stockyards are considered one of the chief forces that molded the animal–industrial complex into its present form under contemporary capitalism. According to Kim Stallwood, Chicago and its stockyards from 1865 are one of the two milestones that mark the shift in human attitudes toward animals that empowered the animal–industrial complex, the other being the post–World War II developments such as intensive factory farms, industrial fishing, and xenotransplantation. According to sociologist David Nibert, the Chicago slaughterhouses were significant economic powers of the early 20th century and were "famous for the cruel, rapid-paced killing and disassembly of enormous numbers of animals." In popular culture In 1906 Upton Sinclair published The Jungle, uncovering the horrid conditions in the stockyards around the start of the 20th century. The stockyards are referred to in Carl Sandburg's poem Chicago: "proud to be Hog Butcher, Tool Maker, Stacker of Wheat, Player with Railroads and Freight Handler to the Nation." Frank Sinatra mentioned the yards in his 1964 song "My Kind of Town", and the stockyards receive a mention in the opening chapter of Thomas Pynchon's novel Against the Day. The Skip James song "Hard Times Killing Floor Blues" refers to the nickname of the slaughter part of the stockyards during the Great Depression in the 1930s. The Yards were a major tourist stop, with visitors such as Rudyard Kipling, Paul Bourget and Sarah Bernhardt. The play Saint Joan of the Stockyards, a version of the story of Joan of Arc by Bertolt Brecht, takes place in the stockyards. The 1950 film Union Station with William Holden has the final scene at the Union Stockyards. In "Rose Fights Back", a 1989 episode of