““those African Americans who did manage to penetrate the skilled trades mostly were consigned to low-wage work. According to Social Security Administration data, the black graduates of Carver High's auto mechanics program from 1956 to 1969 earned barely half that of the white graduates of Mergenthaler High,2 taking four and a half years to reach the earnings levels that Mergenthaler alums realized “after a few months” (Levenson and””