Maps of land and ports in Mexico, being surveys re Tehuantepec Railroad

Comprises:

/1 Plan of that part of the Isthmus of Tehuantepec, between the Jaltepec river and the Pacific plains; Embracing all of the Engineering difficulties on the route of the Survey / J. G. Barnard, U. S. Engineers, Chief Engineer [et al.] 1851. [Lithograph, scale 1" : 1 3/4m. Shows also 'Profile on the line as surveyed']

/2 Chart of the ports of La Ventosa & Salina Cruz according to the survey made in December 1850 for the Tehuantepec Rail Road Company, New Orleans / By their Engineer P. E. Trastour. 1851 Oct. [Lithograph, scale 1 : 11,000]