Harold L. Ickes served simultaneously in several major roles for Roosevelt. Although he was the Secretary of the Interior, he was better known to the public for his simultaneous work as the director of the Public Works Administration, where he directed billions of dollars of projects designed to lure private investment and provide employment during the depths of the Great Depression.

In 1933, Ickes ended segregation in the cafeteria and rest rooms of his department, including the national parks around the country.

In 1937, Ickes expanded the boundaries of Yosemite National Park through a direct government purchase of a 7,200 acres (29 km2) tract owned by the Yosemite Sugar Pine Company. This had the effect of ending large-scale commercial logging in the park.

N.B. An astonishing public servant.

Wikipedia: https://en.wikipedia.org/wiki/Harold_L._Ickes