MS-804 from the Municipal Library of Porto, Portugal, is a unique copy of the journal of the first voyage to India under Vasco da Gama’s (ca. 1460–1524) command. It describes the voyage subsequent to the departure from the Tagus River, Portugal, on 8 July 1497 until the return up the shallows of the Grande River de Buba, Guinea, on 25 April 1499. The author of the original of this account is pr...