Dall, William Healey, 1845-1927

William Healey Dall was born on 21 August 1845 in Boston, Massachusetts, USA He entered the service of the Land Office of the Illinois Central Railroad in Chicago, spending his evenings studying at the Chicago Academy of Sciences. In 1865, he was appointed naturalist on the United States Western Union Telegraph Expedition (Alaskan Division), 1865-1867 (leader Robert Kennicott), sent by the Western Union Telegraph Company to survey a route for, and to construct, a telegraph line through Alaska by way of Yukon River and Seward Peninsula, in connection with plans to establish a telegraph link between the United States and Europe by way of Bering Strait. After the death of Kennicott in May 1866, Dall took over the leadership of the scientific work. He remained for a further year to continue his scientific work on the United States scientific expedition, 1867-1868, making a reconnaissance of the geology and natural history of Norton Sound and the lower Yukon River below Nulato. As a result of his three-year residence in Alaska, he subsequently published a report on the country's geography, history, inhabitants and resources.

From 1871 until 1884, Dall was employed by the United States Coast Survey, under whose auspices he continued his investigation of Alaska and the northern Pacific Coast. In 1884, he was appointed palaeontologist to the United States Geological Survey, a post he held until 1925. While working at the US Geological Survey, Dall travelled as geologist on the United States Harriman Alaska Expedition (leader Edward Harriman) in 1899, sailing in George W Elder to the islands of southeast Alaska and into the Bering Sea. He served as honorary curator of molluscs at the Smithsonian Institution from 1868 to 1927 and at the U.S. National Museum from 1880 to 1927. He held the chair of invertebrate palaeontology in the Wagner Institute of Science between 1893 and 1927 and served as honorary curator of the Bishop Museum in Hawaii from 1899 to 1915. He died on 27 March 1927 in Washington, DC.

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