manuscriptcartographic Manuscript maps. lcgft eng An unidentified sketch map of a segment related to the railroad showing a large stream. Sketch map contains information relevant to the river portion of the proposed combined rail-water route across the Isthmus of Tehauntepec. Relief shown pictorially. Title devised by cataloger from the LUSO-Hispanic World in Maps. Manuscript: Pen-and-ink (black and red) with pencil annotations on 6 sheets cut into irregular triangle and rectangle shapes on paper. Accompanies the Map of the Techuantepec Rail Road, 1851: G4412.T42 1851 .T4. Imperfect: Fragile, fold-lined, cracked, holes and staining throughout. LC Luso-Hispanic World, Tehuantepec Railway--Maps. Railroads--Mexico--Tehuantepec, Isthmus of--Maps. Tehuantepec, Isthmus of (Mexico)--Maps. Mexico Tehuantepec, Isthmus of. Available also through the Library of Congress Web site as a raster image. https://hdl.loc.gov/loc.gmd/g4412t.lh001008