John Day's letter.
This letter was written by the English merchant John Day to an unidentified Spanish 'Lord Grand Admiral' who is believed to have been Christopher Columbus. Written between December 1497 and January 1498, it contains valuable information about John Cabot's voyages.

From Ian Wilson, John Cabot and the Matthew (Tiverton, England: Redcliffe Press, © 1996) 6. Courtesy of the Spanish National Archives. Valladolid, Spain.