PURE AMERICANA by A.T. Crawford. The detail of the photo is not great. But if you see what looks like a winged oil can, you're right on target. This is in front of the original building of the Hunter Museum.
Chattanooga has public artworks scattered all over town. Some of it is whimsical, such as this piece, some more traditional. In front of the public library is a 15-foot gleaming metal sculpture of a stack of books. Not sure how much it encourages reading, but it's an attention-getter.