Map taken from a XVI century manuscript of the King of Spain's Library (1574). Published in the Boletín de la Sociedad Geográfica de Madrid, 1882. Source: Archivo Eclesiástico de la Curia Metropolitana, San José, Costa Rica. More information credits.

Note: Color has been added to the map for clarity.

A. Present day Mexico and the Gulf of Campeche.
B. Yucatan, Belize, northern coast of Honduras and the Yucatan Sea.
C. Coast of Nicaragua and the Caribbean Sea.
D. Pacific coast of Guatemala and El Salvador.
E. Pacific coast and part of present day El Salvador and Nicaragua.
F. Caribbean Sea coast of Nicaragua showing the mouth of the Río San Juan and a portion of Costa Rica.
G. Pacific Ocean
H. Lago de Nicaragua and the present day Province of Guanacaste Costa Rica.
I. Central and southern portion of Costa Rica and western Panama.