OHC Flathead

[Flatout]

Ford engineering, in the late 30's or early 40's made 10 ohc engines based on the flathead block. The idea was to develop design ideas for the future. It's been reported that Henry ordered them to be destroyed. The old engine design continued for another 10+or so years.
The story about them, complete with photos was published in 1959. I think it was Motor Life Magazine, and authored by Barney Navarro. It was too long ago for my ancient memory to be sure.