Casa Madero  
   Established in 1597, the oldest winery of the Americas is located in Monterrey. Produces red and white table wines as well as a range of spirits.
   http://www.madero.com.mx/

Château Camou  
   Baja California producer of Fume Blanc, Chardonnay, Zinfandel, and blends, founded in 1985. Includes product descriptions, reviews, an award list, and a company overview.
   http://www.chateaucamou.com.mx/

Vides Y Vinos Californianos  
   Produces red wines under the Roganto and Californio brands in Ensenada, Baja California. Contains product descriptions and a company overview.
   http://www.videsyvinoscalifornianos.com/

Casa de Piedra Winery  
   Producer in Ensenada, Baja California. Includes some product descriptions, online ordering, and a company profile.
   http://www.vinoscasadepiedra.com/