I discovered a large Census document that detailed the US population by race from 1790 to 1990.
They had it broken down nationally, by 5 areas, 9 regions and by each state.
I was surprised Delaware is part of the South and mid-Atlantic is NY, NJ, and PA.
I chose points every 50 years because I didn't want 177 pages too.
In the national population what the hell is "other"? They walk among us. 
I was surprised that the value of the average slave was lower than I expected... still adds up to Billions though.
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