South of the Border Tours runs mostly senior-citizen package tours to Álamos, San Carlos, Puerto Peñasco, the Mission Route, Baja, and the Copper Canyon. 7937 E. Coronado Rd., Tucson, AZ, 85750. 520/760–4000. www.southofthebordertours.com.
Solipaso is run by an American expat couple based in Álamos; they sell set or custom itineraries and specialize in birding, soft adventure, and natural-history tours throughout Mexico. Calle Obregon 3, Álamos, Sonora, 85750. 647/428–0466. www.solipaso.com.