This is not a font - but someone with a pen writing it. (And what a wonderful book to be given such a horrible cover for it.)

Perhaps you just want something similar - if that is the case - look at:
Written on His Hand - http://www.dafont.com/written-on-his-hands.font?text=Great+Gatsby&psize=l

It was the only handwritten script I could find with that type of 3rd Grader "G"

There is one more that is that similar. Nah, similar, nope, just the same handwriting style.