KD boasts Pearl S. Buck and Joan Lowery Nixon.

I know TKE has William L. Shirer, a Pulitzer Prize Winning Author. I am sure there are more but don't want to bother looking them up.

Chi Omega has Harper Lee who wrote To Kill a Mockingbird and my favorite author, Kurt Vonnegut, is a Delta Upsilon.

Carol Ryrie Brink (she wrote Caddie Woodlawn) was in a sorority, but it escapes me which one.

Theodore "Dr. Seuss" Geisel is a SigEp. There are more, but too lazy to look for them.

ZTA has Faith Baldwin who was a romance novelist.
And Ruby Graham....not really an author but she was the former editor-in-chief of Seventeen magazine.