1850 United States Census 1850 Census 1850 census 1850 US census 1850 United States Census 1850 US census 1850 census 1850 census 1850 United States Census 1850 United States Census the number who were slaves was 3,204,313 http://en.wikipedia.org/wiki/1850_United_States_Census 1850 census 1850 United States Census 1850 Census 1850 United States Census English English http://en.wikipedia.org/wiki/1850_United_States_Census 1850 US census 1850年 1850 census 1850 United States Census 1850 census English the number who were slaves was 3,204,313 1850 census 1850 census 1850 US census 1850 United States Census 1850 United States Census 1850年 Seventh (7th) U.S. Census (of 1850) 1850 United States Census 1850 United States Census 1850 United States Census 1850 US census the number who were slaves was 3,204,313 English 1850 United States Census