Letter from Count [Alexander Matveyevich Dmitriev-Mamonov] Mamonov, November 23, [after 1803] (Moscow), Box: 22, Folder: 28. 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/466984 Accessed October 04, 2024.