An October 25, 2012, Law Librarian Blog post:
“Memphis Public Library Card With Photo Held To Be A Valid Voter ID:
Here’s a bit of legal fun. The Tennessee voter ID law was under attack in that state as unconstitutional. The Tennessee Court of Appeals ruled that the law is constitutional. However, the more interesting part of the opinion concluded that a photo ID issued by the Memphis Public Library constituted a valid ID for anyone attempting to vote under the law. The State had argued against that point. The Court stated ….” [Link to full blog post.]