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Francis Amasa Walker
In 1869, Walker became chief of the Bureau of Statistics at the Treasury Department. The secretary of the interior appointed him as superintendent of the ninth census in 1870. In 1871, he was appointed commissioner of Indian affairs, although he also continued to serve as superintendent of the census without remuneration. He resigned both posts in December 1872 to become professor of political economy and history at Yale. He was appointed superintendent of the tenth census in 1879, but resigned about a year later to become president of the Massachusetts Institute of Technology, a post he held until his death in 1897. Walker was one of the preeminent economic voices of his day, especially in regard to wage and labor theory.