Original sentence: In 1944, he became research director of the Political Action Committee for the  CIO.In 1946 he was elected to the National Board of the NAACP -- the first white person to be so recognized
Edited sentence: In 1944, he became research director of the Political Action Committee for the CIO.In 1946 he was elected to the National Board of the NAACP—the first white person to be so recognized