MacMillan/McGraw-Hill Publishers
Merrill Science Publications
Scholastic Books
Pima County, Arizona
Center for Biological Diversity
City of Tucson
Arizona-Sonora Desert Museum
High Desert Museum
Desert Survivors
San Carlos Apache Museum
Native Seed/SEARCH
MedOptics Corp
Cartwright & Associates
Asarco Corp.
Photometrics Ltd.
Jack Schaffer Publications
W.P. Press
Muscular Distrophy Association
University of Arizona Desert Plants
Arizona Native Plant Society