A Field Guide to Rock Art Symbols of the Greater Southwest by Alex Patterson is a comprehensive reference designed to aid in the interpretation of Native American rock art across the southwestern United States and northern Mexico. The guide compiles over 600 commentaries on specific symbols, contributed by more than 100 archaeologists, anthropologists, researchers, and Native American informants. These interpretations, while acknowledging the speculative nature of understanding ancient symbols, provide valuable insights into the possible meanings attributed to various motifs.​
 
The book is organized to facilitate field use, featuring a pictorial key at the beginning and an alphabetical index by both ascribed meaning and symbol description. With approximately 500 illustrations, readers can easily locate symbols that closely match those encountered in the field. Additionally, the guide includes directions to 18 rock art sites in national and state parks, enhancing its practical utility for enthusiasts and researchers alike.​
 
While the interpretations remain tentative, Patterson emphasizes their provisional nature, ensuring that readers approach the material with an understanding of its speculative aspects. This approach makes the guide a valuable tool for those interested in exploring and understanding the rich tapestry of rock art in the southwestern region.