Scope and Contents From the Collection: Following the series of correspondence and documents for U.S. Presidents and Vice Presidents through the term of the Nixon/Agnew administration is a second series consisting of correspondence of presidents pro-tempore of the U.S. Senate and presidents of particular administrations which held a prominent place in the history of the United States. These include Elias Boudinot, president of the Continental Congress, Sam Houston, president of Texas, and Jefferson Davis, president of the...