Letter fragment from Rumford [perhaps Sir Benjamin Thompson, Count Rumford in the nobility of the Holy Roman Empire], June 9, 1801 (London)

Letter fragment from Rumford [perhaps Sir Benjamin Thompson, Count Rumford in the nobility of the Holy Roman Empire], June 9, 1801 (London), Box: 30, Folder: 53. Letters, literary manuscripts, and personal papers of the Porter family, MS 28. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/468247 Accessed December 26, 2025.