When the chairman of the civil engineering team, Major L'Enfant, abruptly resigned and returned to France with the plans, Banneker's photographic memory enabled him to reproduce them in their entirety. Washington, DC, with its grand avenues and buildings, was completed and stands today as a monument to Banneker's genius. Thomas Jefferson and Benjamin Banneker exchanged letters and in the letter Thomas Jefferson politely challenged Benjamin to do what he can to ensure racial equality. In a twelve-page letter to Thomas Jefferson, he refuted the statement that "Blacks were inferior to Whites." Jefferson changed his position and, as a testimonial, sent a copy of Banneker's almanac to the French Academy of Sciences in Paris. Another was used in Britain's House of Commons to support an argument for the education of Blacks. Banneker was living proof that "the strength of mind is in no way connected with the color of the skin." In his letter, Banneker acknowledged he was “of the African