The Federalist Papers are a series of 85 articles or essays by James Madison, Alexander Hamilton, and John Jay, advocating the ratification of the United States Constitution.

The Anti-Federalist Papers are a collection of articles, written in opposition to the ratification of the 1787 United States Constitution. Unlike the Federalist Papers written in support of the Constitution, the authors of these articles, mostly operating under pen names, were not engaged in a strictly organized project. Morton Borden, collected 85 of the most significant papers and arranged them in an order closely resembling that of the 85 Federalist Papers, e.g. #10 in Borden's arrangement argues against Federalist No. 10.