Drive right up to the starting coords and note the dates that define this site's namesake's lifespan.
From these two dates figure the next clue location at,
N33 48.xxx / W084 26.yyy,
where xxx = year of birth minus 1207
and where yyy = year of death minus 1108.
Once there, take in the view off to the west towards the Chattahoochee and Cobb, and note the dates that define the short lifespan of 'Dickeyboy'.
From these two dates figure the final cache location at,
N33 48.aaa / W084 26.bbb,
where aaa = year of birth minus 1227
and where bbb = year of death minus 1311
Enjoy the view south and east as you find the ammobox that contains a logbook and pencil, glow-in-the-dark nails, a where's george $, a teddy bear, a blue bandana, Ivanhoe, a paintbox, orange tic-tacs, a surfer necklace, and a gold ring. Take something, leave something, and be sure to sign the logbook!
Have a fun hunt and don't get too spooked as you explore a rarely visited piece of Atlanta history.