Ex-Cincinnati Marmon 540 on fire at Shafor and Brydon in 1965. The chimney on top was in fact a working chimney with a smudgepot.
Which caught fire the day after Bill Owen (head of City Transit) told the Dayton Fire Dept to ignore "any damn fool who reports a bus on fire." When it did catch fire the next day, it happened to be in Kettering, whose Fire Dept extinguished the blaze.
Note the Santa on the front of the bus -- it's the 1965 version
Harvey Hylton collection