Start with the signature. It’s always there, plus a date and sometimes a copyright symbol. Abbreviated to “ST,” “Steinberg” even becomes a brand name on products in the work. This apparent monomania extends to the creation from scratch of a world that resembles the real one. Pencils are carved and painted, a camera is a block of wood with a pushpin for a button and the screw top from a soda bottle for a knob. There are signs that the world outside Saul Steinberg’s studio consists of landmarks like hotels and banks—Miami and Istanbul are Miami and Istanbul because trains stop there; Steinberg