John N. Spain: Growing Winter Hardy Caci in Cold/Wet Climate Conditions
Ed Storms: The new Growing of the Mesembs
W. Hubert Earle: Cacti of the Southwest
Pierre C. Fischer: 70 Common Cacti of the Southwest
Clive Innes, Charls Glass: The Illustrated Encyclopedia of Cacti
Cactus&Co. Society Journal Echinocereus Special Issue
N. L. Britton, J. N. Rose: The Cactaceae I-IV
Lyman Benson: The Cacti of the United States and Canada
Ken March: Adrian Bloom's guide to Cacti & Succulents
Nigel Taylor: The Identification of Escobarias