The Acts of Congress include the Constitution, whose preamble promises to "secure the Blessings of Liberty to ourselves and our Posterity," and the Bill of Rights, the first 10 amendments to the Constitution, which establish such fundamental liberties as the right to free speech, press, assembly and religion.
Christie's described the book as being in near-pristine condition after 223 years. It was specially printed for Washington in 1789, his first year in office as president.
The margins include Washington's handwritten brackets and notations highlighting key passages concerning the president's responsibilities.
The Acts of Congress volume was sold from Washington's library at Mt. Vernon in 1876 and eventually bought at auction by collector Richard Dietrich in the 1960s. It was being sold by the family's estate.
Similar volumes created for Thomas Jefferson, the first Secretary of State and third U.S. president, and Attorney General John Jay, are in Indiana's Lilly Library and a private collection, respectively.