J 611 posted:Am I incorrect, or did the 765 have these at one point too?
Yes, the NKP 700s did indeed have "Overfire Jets", but not quite as visible as those huge canisters seen on the sides of the fireboxes of the C&O locomotives. The NKP design, was the standard round hole in the firebox side sheets, with just a simple steam supply tube/jet piped into the hole, and controlled by the Fireman. The "Overfire Jet" holes are still in the sides of the firebox on 765.