経済協力局
After the war Kimball worked in the United States Department of State and helped General George C. Marshall establish the Economic Cooperation Administration to implement the Marshall Plan. Kimball later served as head of the International Information Administration, a branch of the State Department. When the IIA became a separate agency, the United States Information Agency, in 1953, President Dwight D. Eisenhower allowed Kimball to serve as acting director until the first full-time director, Theodore Streibert, could take office.