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