This is a poor quality picture of a picture. Helen Earley had passed a couple of these out back in the day and I can’t find anyone that still has one. I have also seen one in a printed publication before but can’t figure out what publication it was. Sadly, Oldsmobile printed this with the negative reversed. If you have an original, let me know. I would love to pay for a quality copy or a quality scan of it. It is a “Hot Test” of the Jetfire engine on the dyno at Oldsmobile in 1961
.