Letter from Henry Waddington, Jr., to William Tudor,

One letter requesting assistance with sending a sick American citizen back to the United States.

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.

Letter from Mr. Wheelwright to William Tudor,

Letter enclosed with correspondence to Tudor from the United States.

Letter from W. D. Peck to William Bentley, 1815 March 2

Two leaves containing a two-page handwritten letter from Peck to Bentley identifying and describing the fish species Ophidium as the specimen in a drawing by a young woman described by Peck alternately as Bentley's "daughter" and "Miss C." Bentley had no children, and Peck is presumably referring to Hannah Crowninshield, Bentley's pupil.

Letter from W. D. Peck to William Bentley, 1815 May 17

One leaf containing a one-page handwritten letter from Peck to Bentley briefly commenting on the receipt of a fish specimen.