People had the chance to find a new book at a plethora of different stands and meet with hundreds of authors.
This year is the 40th anniversary of the festival.
Seven Pulitzer Prize-winning authors were also at the festival, along with New York Times and USA Today best-selling authors.
Parul Bhandari was one author showcasing her books for the first time at Lit Fest this weekend. She told ABC7 she writes American-born stories on South Asian culture.
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Discussions on topics, including book-banning, race, sexual identity, politics and more, were also at the forefront of the festival.
The free festival runs again Sunday from 10 a.m. to 6 p.m.