A special guest spoke to a full crowd at the East Tennessee History Center on Tuesday.
Author Marianne Wiggins spike on her 2003 book about East Tennessee. "Evidence of Things Unseen" chronicles the development of Oak Ridge, TVA and the Manhattan Project.
Her book was nominated for a Pulitzer Prize and was a National Book Award finalist. Wiggins stressed the importance of remembering an area's history.
"If you don't keep current with what has happened in the past you are condemned to repeat those mistakes. What happened at the beginning of the 20th century has dictated what Tennessee is today," said Wiggins.
The event also celebrated the 125 year history of the Knox Co. Public Library.