Cuatro Cienegas de Carranza - Information on this unique desert aquatic ecosystem, including organisms, habitat, conservation and tourism. [English/Spanish] - http://www.utexas.edu/tmm/sponsored_sites/dfc/cuatroc/
Coahuila, Mexico- WorldGenWeb - Volunteer project providing geneaology resources, including obituaries, background information on recordkeeping in the state, and links to maps and history. - http://www.rootsweb.com/~mexcoahu/
State of Coahuila - Official state site, with information about tourism, investment and government. [English/Spanish] - http://www.coahuila.gob.mx
Todd Jagger Photo Gallery - Photos of Coahuila scenes, with some informative text. - http://www.jagger.com/mex.html
Coahuila and Texas, 1821-1836 - Historical index for the early political development of the region, including DeWitt Colony under Coahuila y Tejas, from Liberal Federalism to Centralist Dictatorship, 1824 Constitution and Colonization Laws. - http://www.tamu.edu/ccbn/dewitt/coahuilacon.htm