Walker's activities after the war included stints as editor of the Springfield (MA) Republican, chief of the government bureau of statistics, director of both the 9th and 10th Census (1870 & 1880) and as U.S. commissioner of Indian Affairs (1871–72). From 1872 to 1880 he was professor of political economy at the Sheffield Scientific School at Yale; In 1878 he represented the United States at the Monetary Conference in Paris; from 1885-92 he served as president of the American Economic Association; and from 1881 to his death he was president of the Massachusetts Institute of Technology. The Walker Memorial, a students' clubhouse and one of the Technology buildings on the Charles, was dedicated in 1916. As an economist, Walker is especially known for his theories on wages and profits. He was a prolific writer, especially on economic topics, and is regarded as an original and powerful thinker. He helped to design the Stanford University campus. FA Walker is buried at Walnut Grove cemetery in North Brookfield, Massachusetts.