Nicholas Biddle to William Tilghman, April 6, 1818: 5 matches
Nicholas Biddle to William Clark, July 4, 1812: 3 matches
Nicholas Biddle to William Clark, March 12, 1815: 3 matches
William Clark to Bradford and Inskeep, March 29 1813: 3 matches
Introduction to the Review of the Journals in the Western Gleaner: 3 matches
William Clark to Albert Gallatin, March 31 1826: 3 matches
Analectic Journal, 1815: 2 matches
William Clark to Nicholas Biddle, February 20, 1810: 2 matches
Nicholas Biddle to William Clark, March 3, 1810: 2 matches
William Clark to Nicholas Biddle, May 22, 1810: 2 matches
Nicholas Biddle to David Bailey Warden, July 7, 1810: 2 matches
Nicholas Biddle to William Clark, July 7, 1810: 2 matches
William Clark to Nicholas Biddle, January 24 1813: 2 matches
John Conrad to Thomas Jefferson, November 13, 1809: 2 matches
William Clark to Rudolph Hassler, January 26, 1810: 2 matches
Nicholas Biddle to William Clark, March 17, 1810: 1 match
William Clark to Nicholas Biddle, March 25, 1810: 1 match
William Clark to Nicholas Biddle, January 24, 1811: 1 match
Nicholas Biddle to William Clarke, June 28, 1811: 1 match
Nicholas Biddle to William Clarke, July 8, 1811: 1 match
William Clark to Nicholas Biddle, August 15, 1811: 1 match
William Clark to Nicholas Biddle, August 6, 1812: 1 match
William Clark to Nicholas Biddle, September 5, 1812: 1 match
John Conrad to Nicholas Biddle, November 12, 1812: 1 match
Nicholas Biddle to William Clark, February 23, 1813: 1 match
Nicholas Biddle to William Clark, March 23, 1814: 1 match
Nicholas Biddle to William Clark, October 21 1816: 1 match
Nicholas Biddle to Charles Chauncey, December 7, 1816: 1 match
Thomas Jefferson to John Conrad,December 11, 1809 : 1 match
Thomas Jefferson to John Conrad, April 24, 1811: 1 match
Western Gleaner Review of the Lewis and Clark Journals(1814): 1 match
Biddle to unknown recipient, 1810: 1 match
William Clark to Benjamin Smith Barton, May 28, 1810: 1 match
William Clark to Benjamin Smith Barton, 28th May 1810: 1 match
William Clark to John Marks, March 29, 1811: 1 match
Thomas Jefferson to William Clark, Sept. 2. 16: 1 match
Paul Allen to Thomas Jefferson, Aug 18 1813: 1 match
Thomas Jefferson to Nicholas Biddle, August 20, 1813: 1 match