Letters from Edward McCall to William Tudor,

Four letters regarding the inspection of the mine at Chanca and supplies advanced to their agent, B. Llaveria, as well as news on the movements of Simón Bolívar, José de la Mar, Antonio José de Sucre, and other Peruvian military leaders

Letter from Francis Sales to William Tudor,

One letter regarding the travel and activities of Peruvian politician Manuel Lorenzo de Vidaurre, including an including an excerpt of correspondence from Vidaurre in French.

Letter from John White Webster to William Tudor,

Two letters thanking Tudor for sending Peruvian mineral specimens to Harvard and requesting he send additional mineral and fossils, as well as reports on other "natural phenomena" for publication.