SS President Coolidge Newport News, Virginia built the two ships, completing "President Hoover" in 1930. The keel for "President Coolidge" was laid 22 April 1930 and the ship was delivered 1 October 1931. They were the largest merchant ships built in the United States up to that time. Each ship had turbo-electric transmission, with a pair of steam turbo generators generating current that powered propulsion motors on the propeller shafts. Westinghouse built the turbo generators and propulsion motors for "President Coolidge" but General Electric built the turbo generators and propulsion motors for "President Hoover". In the "President Coolidge" twelve Babcock & Wilcox superheater
Sherman Coolidge the 1940s. In September 1915, Reverend Coolidge, speaking as President of the Society, appealed for recognition of American Indians as citizens and called upon the country to observe a national "American Indian Day." In response, President Calvin Coolidge issued a proclamation on September 28, 1915, which declared the second Saturday of each May as American Indian Day. Reverend Coolidge traveled throughout United States making addresses and delivering lectures on behalf of the Society and American Indians. In May 1923, Coolidge and other society leaders joined with reformer John Collier founding the American Indian Defense Association, a powerful new lobby in