In late 2012 photography professor Nigel Poor was making a routine visit to San Quentin State Prison.
She was collaborating on an image interpretation project with incarcerated students. That's when San Quentin Public Information Officer Sam Robinson pulled out a box and uncovered thousands of images documenting the prison's history and life behind bars.
Poor, a professor at Cal State Sacramento, joined us on KTVU the 9. Watch the interview in the video box above.