Baltimore & Ohio GP9 6145 worked on Rochester & Southern’s former B&O Brooks Avenue Yard in Rochester while I was studying at the Rochester Institute of Technology. I made many photographs of this Electro-Motive diesel; this image exposed on October 22, 1987. with my Leica M2, 50mm Summicron and Kodachrome 25 slide film. If I knew why it was called “The Mighty Jumbo”, I’ve forgotten now.