Hiking and Backpacking Trails of Texas

I recommend this book to anyone interested in exploring Texas parks on foot. Parks are arranged by region, and there is a section devoted to parks that offer trails for the backpacker; many facilities are cross-referenced. Sometimes the information is a little brief, but an informative overview of each park is given, along with a contact address and phone number of the respective operating agency, if additional information is desired. I haven't found a more thorough source for backpacking Texas.