Smashed up 50's Wayne school bus involved in "The Worst Thing Ever."

This bus is the subject of an upcoming documentary, based on a terrible accident which claimed the lives of 27 school children and driver.  The bus went out of control and plunged into a swollen river in a small town in Kentucky in 1958. You can learn more about the upcoming documentary at the official website.

We believe the bus body to have been manufactured by Wayne Manufacturing. However the year and chassis ( ex: Ford, Chevrolet, etc.) is unknown. we would appreciate any help from anyone with knowledge of Wayne buses.

Reasons we believe it to be a Wayne-  Shapes of 3 rear windows, rear side window shape, drains and roof vent design, rear wheel well shape. shape and positioning of side impact beams, windshield shape.

See more pictures of buses with bodies made by Wayne Manufacturing for comparison.