Robert Sparks Walker, a naturalist, author, poet, local historian, horticulturalist, and editor, was born on 1878 February 4 in a log cabin in Chattanooga, Tennessee. A prolific author, he penned many books, including State Flowers and State Birds: Being an Authentic Record of the Official Flowers and Birds of All the States in America, Lookout: The Story of a Mountain, and Torchlights to the Cherokees: The Brainerd Mission, which was nominated for a Pulitzer Prize in Letters, Drama & Music in 1931. In addition to books, Walker authored journal and magazine articles, poems, and newspaper columns, which have appeared in more that 600 publications, including the New York Times and Nature Magazine. Most of his writing focuses on natural history, botany, and horticulture. For more than twenty-five years, Walker wrote a nature column for the Sunday edition of the Chattanooga Daily Times. The publication records, draft poetry, manuscripts, scrapbooks, and newspaper clippings in the collection document his literary contributions.

In 1944, Walker helped found a local Audubon Society which was originally named in his honor, but was later changed to the Chattanooga Audubon Society at his request. He was also president of the Tennessee State Horticultural Society, a life member of the Tennessee Academy of Science, and involved in the preservation of other Chattanooga landmarks, such as Maclellan Island, which became wildlife sanctuary under the protection of the Chattanooga Audubon Society. Walker devoted a much of his life to the development of the Elise Chapin Wildlife Sanctuary, home to Spring Frog Cabin, where he was born. The cabin is also the birthplace of the Cherokee naturalist Spring Frog in 1754, and was one of Walker's favorite places. For years he spent nearly every day there, regardless of the weather. Mr. Walker died on 1960 September 26 after suffering a heart attack while walking in the Elise Chapin Wildlife Sanctuary. He is buried next to Spring Frog Cabin in Audubon Acres. Walker's diaries document local efforts to preserve and understand Chattanooga's natural environment.

Chattanooga Audubon Society. “Audubon Acres: Elise Chapin Wildlife Sanctuary.” Accessed April 3, 2020. https://www.chattanoogaaudubon.org/audubon-acres.html.

Clark, Alexandra Walker. Chattanooga’s Robert Sparks Walker : the Unconventional Life of an East Tennessee Naturalist Charleston, SC: Natural History Press, 2013.

Gaston, Kay Baker. “Gaston: The Spring Frog Cabin at Audubon Acres.” Times Free Press. January 7, 2018. https://www.timesfreepress.com/news/opinion/columns/story/2018/jan/07/gastonspring-frog-cabaudubacres/460577/.