I wonder if the 24" f6 B&L Aero Tessar would do it. I use mine on 11x14, but for portraits. I don't see anything about the design of the lens cells that would indicate it is constricted in coverage. Mine is just in a tube I made, so I don't know about any impact the original mount might have. These are also big heavy things. The cells alone are about 10 lbs. It is actually a Gundlach Radar type design with 3 cemented elements in the rear according to Kingslake. The front cell design makes for easily varying the element spacing if you want to mess up the correction. Even has a set screw to lock that down.
These still often go for cheap because they really are pretty impractical, but a heck of a lens for not much money. Often just the cells, so some creativity required. If I get a chance I'll try to see if I can rig mine up out the window camera obscura style to see what the image circle looks like.
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