Seems that Rachel Dolezal was far from the first who passed for black.  America’s foremost Geologist and first director of the new US Geological Survey Clarence King in 1879. Right is Ada Copeland King, the former slave he married under the assumed name and identity of James Todd, a light-skinned black man. Only on his deathbed did King confess to his family that he was really Clarence King, a white man, not a light-skinned Pullman Porter.