The late Franklin Garrett (September 25, 1906 – March 5, 2000) was a popular Atlanta writer. He wrote the two volume set on Atlanta history, Atlanta and Environs: A Chronicle of Its People and Events, 1820s-1870s, and Atlanta and Environs: A Chronicle of Its People and Events, 1880s-1930s. Those two books are often a good starting point when tracking down information about the early history of the city.
The Internet Archive, that wonderful bottomless pit of assorted media, from audio files of Grateful Dead concerts, to bizarre drive-in horror movies, contains an episode of All Aboard, a television series for railroad enthusiasts that will be of interest to anyone interested in Franklin Garrett or Atlanta history. The episode embedded below is about the role of railroads in Atlanta history, and features an interview with Franklin Garrett.