Warren G. Magnuson served as U.S. senator from the state of Washington for six terms. The sheer sweep of his accomplishments is astonishing: authoring the 1964 Civil Rights Act, protecting Puget Sound, saving Boeing for Seattle, championing consumer protection legislation, reorganizing the railroads, and godfathering the electrification of the Pacific Northwest by pressing for Columbia and Snake River dams. He pushed for federal aid to education,...