 Hickman also documented individuals such as Eleanor Roosevelt, Joe Louis and Ella Fitzgerald on numerous occasions.During his time with the NAACP, Hickman was involved in the documentation of the Dallas School Segregation Court Case in 1954, named the Brown vs Board of Education case.The case that Hickman was involved in, and on many occasions called to testify on in court, brought to light the inequalities of school segregation and inequalities in Dallas.