Veteran UFO researchers Vicente-Juan Ballester Olmos and Wim van Utrecht have just published a new book that presents and analyzes an array of UFO photographs taken in Belgium from 1950 to 1988. For those interested in UFO images and in considering how the scenarios surrounding identified flying objects can inform how we make sense of unidentified objects, it’s well worth your time. And here’s a big plus – it’s available to download for free via academia.edu.