Author Gary L. Stewart of The Most Dangerous Animal of All: Searching for My Father . . . and Finding the Zodiac Killer we mention on Podcast 669

http://www.amazon.com/Most-Dangerous-Animal-All-Searching/dp/0062313177/ref=sr_1_1?ie=UTF8&qid=1446465136&sr=8-1&keywords=Gary+L.+Stewart