"30th setiembre de 1897." Annotated in red ink: Approximate position of Puerto Castillo in 1858 as per award of arbitrator E.P. Alexander. Annotated in red ink: As claimed by Costa Rica, 1858. Available also through the Library of Congress Web site as a raster image. 1 map : ms., tracing linen; 34 x 63 cm.
Scale 1:1,000,000. Negative photocopy. Relief shown by hachures. Available also through the Library of Congress Web site as a raster image. Inset: Bahía de Limón, reconocida por el Tente Comandte. Kühne, Abril de 1868. map, photocopy, 50 x 81 cm.