retail stores aggressively sold the company's products. The company maintained outlets in Detroit, New York, Los Angeles, London, and Zurich, and also sold their images at popular tourist spots and through the mail. At the height of its success, the company employed some forty artisans and a dozen or more traveling salesmen. In a typical year they would publish an estimated seven million prints. With the declining sale of photographs and postcards during World War I, and the introduction of new and cheaper printing methods used by competing firms, the Detroit Publishing Company went into receivership in 1924, and in 1932 the company's assets were liquidated. Today, Jackson's Detroit photographs are housed at the U.S. Library of Congress. This collection of photographs includes more than 25,000 glass negatives and transparencies along with some 300 color photolithograph prints, mostly of the eastern United States. The Jackson/Detroit collection also includes a small group that includes some 900 Mammoth Plate photographs that were taken along several railroad lines in the United States and Mexico in the 1880s and 1890s. The collection also includes views of California, Wyoming and the Canadian Rocky Mountains. In 1936 Edsel Ford, backed by his father Henry Ford, bought Jackson's 40,000 negatives from Livingstone's estate for "The Edison Institute," known today as The Henry Ford in Dearborn, Michigan. Eventually, Jackson's negatives were divided between the Colorado Historical Society (views west of the Mississippi), and the Library of Congress Prints and Photographs Division (all other views). Later life Jackson moved to Washington, D.C., in 1924, and produced murals of the Old West for the new U.S. Department of the Interior building. He also acted as a technical advisor for the filming of Gone with the Wind. William Henry Jackson also attended the 75th anniversary commemoration and the 1938 Gettysburg reunion, in July 1938. In 1942, Jackson died at the age of 99 in New York City. He was honored by the Explorer's Club for his 80,000 photographs of the American West. He was also memorialized by the Adventurers' Club of New York, of which he was an active member. The SS William H Jackson steamship was in active service in 1945. Recognized as one of the last surviving Civil War veterans, he was buried at Arlington National Cemetery. Mount Jackson el. just north of the Madison River, in the Gallatin Range of Yellowstone National Park is named in honor of