Keller, JoséShows proposed route of the Madeira-Mamoré Railway.; Relief shown by hachures.; Prime meridian: Rio de Janeiro.; "Fco. Keller ingr. ... 2 de Outubro 1869"--Lower right margin.; Includes table of coordinates and cumulative elevation gains for various locations along the river.; Differs from a similar 1869 edition on a larger sheet that does not show the proposed route of the railway.45 x 23 centimetersJPEGUMN_ALMA:9947601590001701porSecretaria da Agricultura (Rio de Janeiro)PublicMappa topographico do Valle do Rio Madeira entre as Cachoeiras do Guajarä-Merim e S. AntonioMapsSouth America1869University of Minnesota