Robert W. Hansen is an affiliated researcher with the Museum of Vertebrate Zoology at the University of California, Berkeley, and served as editor of the Herpetological Review from 1991 to 2021. Jackson D. Shedd is a scientific illustrator, herpetologist, wildlife photographer, and independent researcher. He is a departmental associate with the San Diego Natural History Museum.
""The quality of the information is impeccable - detailed, informative, laudatory, complete, from the introductory segments to the taxonomic notes, from the discussion of threats to the last page of the index.""---David M. Gascoigne, Travels with Birds ""A MUST-HAVE for anyone with an interest in California's amphibians and reptiles!""---Ian Paulsen, The Birdbooker Report ""Occasionally a book will appear that effectively ‘raises the bar’ for other volumes in its genre. Hansen and Shedd’s California Amphibians and Reptiles is such a book. . . . [It] contains a wealth of welcome natural history information.""---Tom Lott, Bulletin of the Chicago Herpetological Society