Pachycereus pringlei: Cardon
- Much information and photographs of this cactus growing in its desert home.
- http://www.biology.ed.ac.uk/research/groups/jdeacon/desertecology/cardon.htm#top

Pachycereus gaumeri
- Information on Kanzacam and two photographs.
- http://www.desert-tropicals.com/Plants/Cactaceae/Pterocereus_gaumeri.html

Pachycereus gatesii
- Photograph and information on this species.
- http://www.desert-tropicals.com/Plants/Cactaceae/Pachycereus_gatesii.html

Cardón cactus, Pachycereus pringlei
- Notes on the Cardón.
- http://www.loscabosrestaurantguide.com/cardon cactus.htm