@book{ BB15906137,
author = "United States. Congress. House. Committee on House Administration and United States. Congress. House. Office of History and Preservation",
title = "Black Americans in Congress, 1870-2007",
publisher = "U.S. G.P.O.,For sale by the Supt. of Docs., U.S. G.P.O.",
year = "2008",
series = "House documents",
number = "108-224",
URL = "https://ci.nii.ac.jp/ncid/BB15906137"
}