Alexandra Walker ClarkAlexandra Clark is the granddaughter of Robert Sparks Walker and is a native of Chattanooga, Tennessee. She is the author of Hidden History of Chattanooga and Colorado's Historic Hotels. She has written for numerous publications and is affiliated wit the Chattanooga Audubon Society. Jerry Hill is the President of the Board of Directors of the Chattanooga Audubon Association, a group that was founded with the help of Robert Sparks Walker. Kyle Simpson is the Sanctuary Manager for the Chattanooga Audubon Association, a site that was founded by Robert Sparks Walker and is a popular nature destination today. Read More Read Less