In the middle of the Depression he found enough family support and personal confidence to disregard the advice of well-meaning teachers who were convinced that an African American could never become a chemical engineer. Hawkins headed to Rensselaer Polytechnic Institute to complete his engineering degree and then went on to receive a master's degree in chemistry at Howard University and a doctorate at McGill University in Montreal, where he specialized in cellulose chemistry. After a postdoctoral fellowship at Columbia University he was hired in 1942 by Bell Laboratories, where he was the first African American scientist on the staff. He eventually became head of plastics chemistry research and development and assistant director of the Chemical Research Laboratory.