Download or read book Will Thrall and the San Gabriels written by Ronald C. Woolsey and published by . This book was released on 2004 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the 1930s and '40s Will Thrall was the leading voice in encouraging people to walk the San Gabriels' mountain trails and camp under the stars. A thorough biography of this influential and fascinating conservationist.