The Mammals of Texas
revised edition, David J. Schmidly, 2004 University of Texas Press
$29.95 (Definitive field guide and with range by county)
Reptiles and Amphibians, Eastern Central North America
Roger Conant, Josep T. Collins
1998, Peterson Field Guides, Houghton Mifflin, $20.00 [Good field guide]
A Field Guide to the Mammals of North America north of Mexico
William H. Burt, Richard P. Grossenheider
1980, Peterson Field Guides, Houghton Mifflin, $18.00 [Good field guide]
Fishes of the Gulf of Mexico, Texas, Louisiana and Adjacent Waters
H. Dickson Hoese and Richard H. Moore
1998, Texas A&M University Press [Good photographic field identification guide, color photos separate from text]