By Gerold Frank. I haven't read this one and don't know what Frank's take is on Albert DeSalvo's guilt, but Frank did win an Edgar Award for best Fact Crime for this book -- his second. (Edgar, not book; he wrote a bunch.) It's also the basis for the film starring Tony Curtis. A classic, if a compromised one.
Mid-century scaremongering cover aesthetic aside (and that's actually quite effective; those Eckleburg eyes do kind of follow you around the room), the paperback is in the shape you'd expect for 55 years old: edgewear; corner bumps; a notch out of the top right cover; creases; cracked spine; page toning; previous owner's name on flyleaf. The red-tinted page edges are a somewhat tasteless but on-point mid-century touch, too.