After I'd retired the Capa project, sworn off copying photos in Prussian Blue and was, in general, on the wagon as far as photo derivatives were concerned, a pamphlet from the more than excellent Frick Collection set me off. Mercifully the pamphlet was small, though Rembrandt, and the other two blue redoes, which you will find lurking at the Blue Ups -Forget Red, Forget Green it's Prussian Page look strangely younger for being translated badly.