Ancient Giants, Rituals, and Elite of Jekyll Island

One of the most influential and popular documents exposing the formation of the FED central banking system is a book called, The Creature From Jekyll Island, which recounts a secret meeting that took place in 1910 on Jekyll Island, a stretch of white-sand beaches and beautiful landscape off the coast of Georgia.
While the Bible speaks of Giants roaming the earth in the remote past, so do many other mythologies from around the world, as quoted by the Greek poet Homer in 400 BC saying, “On the earth there once were giants”, or as communicated by Native American tribes, who have a long oral tradition passed down concerning inhabitants with an unusually large demeanor.
President Abraham Lincoln was quoted in 1848 as saying before congress that, "The eyes of that species of extinct giant, whose bones fill the mounds of America, have gazed on Niagara as our eyes do now." Who were these giants that Lincoln spoke of?