 In collaboration with the University of Arizona Press, the division has co-published several technical books in the Studies in Natural History Series, featuring research on topics from pollinators, to water in the desert, to the Sea of Cortez.In the first few years publications were mainly small paperback books.But since 2000, more substantial volumes are common, including the recent field guides to mountain wildflowers and mountain trees, as well as the full-color, 232-page Natural History of the Santa Catalina Mountains, with an Introduction to the Madrean Sky Islands (2013).