The unicameral Congress of the Confederation, officially styled "The United States in Congress Assembled," was composed of delegates elected by the legislature of the various states. The Confederation Congress was the immediate successor to the Second Continental Congress; and delegates to it were similarly chosen. Many of the delegates to the initial 1775 session of the Second Continental Congress had also attended the previous First Continental Congress. Altogether, The "Biographical Directory of the United States Congress" lists 343 men who served as delegates to the Continental Congress in three incarnations from 1774 to 1789; also listed are another 90 persons who were elected as delegates but never served.