Thousands packed the University of Arizona campus over the weekend for the 4th annual Tucson Festival of Books.

PHOTO: Robert Rappaport
Tents at Tucson Festival of Books, 2012

“We’ve grown to be the fourth largest book festival in the country," said Bill viner, founder and chairman of the festival. "It’s not like there’s only five or six of them, there’s a lot of them."

“I’ve learned that if you have great volunteers and incredible sponsors, you can put together an event that makes a difference in our community. For me, it’s all about education and literacy,” Viner said.

PHOTO: Robert Rappaport
Tucson Festival of Books, 2012

This year’s festival also marked the debut of "Science City," focusing on the UA’s role in science.

PHOTO: Robert Rappaport
"Science City" at Tucson Festival of Books, 2012

Listen to Reporter Kelly Hultgren’s unedited interview with Bill Viner.

PHOTO: Robert Rappaport
Books from some attending authors at Tucson Festival of Books, 2012

Arizona Public Media was one of this year’s sponsors of the Tucson Festival of Books.