1940 Census:

1600 Pennsylvania Ave.

Name: George C. Fields
Relationship to Head: Servant
Sex: Male
Race: Negro
Age: 29
Marital Status: Single
Education: 1 year College
Birthplace: Indiana
Residence 1935: Same House
Occupation: Valet/Government
Home of: Franklin D. Roosevelt, President

172. "... George C. Fields, 32, points proudly to the honor certificate presented him yesterday at graduation exercises for the tenth Negro class to be graduated from the Navy's Service Schools at the U.S. Naval Training Station, Great Lakes, IL. Fields served as President Roosevelt's valet for four years before entering the Navy." Ca. 1943. 208-NP-7QQ-2.
(http://www.archives.gov/research/african-americans/ww2-pictures/)