Perez Drinkwater Jr. of Portland, imprisoned in Dartmoor Prison in Princeton, England, during the War of 1812, drew a sketch of the prison in the back of his notebook of sailing problems.

On the reverse side of the drawing, Drinkwater wrote: "On the following page you will find a rough scetch of Dartmoore Prison where I have been Confined for about 13 months but I am in hopes of geting Clear soon as we expect the ratification of the peace between the two Country's every day it cannot Come two soon for I am tired of stying heir in this Lothsom Prison for Lothsom it is and a retched place it is to put people in you may depend. Perez Drinkwater Junr of Portland February 6"