One book that has meant much to my writing is W.G. Sebald's The Emigrants. He uses a photograph of Vladimir Nabokov hunting butterflies in a similar way. The image or a reference to the image is traced throughout the four separate narratives. It sometimes seems to be the only link between the pieces, while the symbol Nabokov cuts remains wide open, a pencil sketch, a mystery to interpret outside his role as emigrant/observer.