Smith, a two-time Tony Award nominee for The Grapes of Wrath and Buried Child, and Kilgore co-founded the Susan Smith Blackburn Prize for women writers.
The other award recipients were Jessica Hecht, Paula Vogel, Laura Marks, Tanya Barfield, Jill Du Boff, Lear deBessonet, Julie Crosby and Denise Scott Brown.
Jiehae Park was recognized with the Leah Ryan Prize for Emerging Women Writers.
The Lilly Awards were founded by Julia Jordan, Marsha Norman and Theresa Rebeck and are named for Lillian Hellman, a pioneering American playwright who famously said, "You need to write like the devil and act like one when necessary."
When her father dies unexpectedly, graphic novelist Alison dives deep into her past to tell the story of the volatile, brilliant, one-of-a-kind man whose temperament and secrets defined her family and her life.