Many of the documents in the Aaron Burr Papers are neither signed nor dated. The Legal Papers Series (1787-1825) consists primarily of documents relating to Burr’s legal practice in New York following his return from Europe. Many of these documents are likely contemporary copies. Addressees include John Greenwood, Thomas H. Flandrau, and Gurdon W. Lathrop, all of whom were clerks in Burr’s law practice. The Personal Correspondence Series (1776-1825) contains many items which touch on military and business matters. Included are unsigned letters, some written in code, to Burr’s sister Sally Reeve, and several letters of Captain Skinner to James Monroe. The Burr-Hamilton Duel Series contains the indictments of Nathaniel Pendleton, Alexander Hamilton’s second in his duel with Aaron Burr, and William P. VanNess, Burr’s second. The Conspiracy Series contains legal documents for Aaron Burr, Harman Blennerhassett, and Davis Floyd. The series also includes extensive correspondence between Senator John Smith of Ohio and Governor Robert Williams of the Mississippi Territory, and a letter of William Clark to Secretary of State James Madison. The Miscellaneous Series contains three additional items.