The group said it's working on an exhibit about the 1950s and spotted something odd in one of its photos. It posted three separate images from the photo showing a giant bottle at the corner of 21st & Yale.

The photo was taken in 1959 looking east down 21st Street. It shows a giant bottle on the southwest corner of 21st Street and Yale, across the street from the Tulsa County Fairgrounds.

The group posted two images, each zoomed in a little closer, showing the bottle, which appears to be at least 50 feet tall.

Visit the group's Facebook page to comment if you know what the bottle was.