Taryn Simon’s exhibition at the architecturally distinguished Milwaukee Art Museum offered up a generous and inquisitive photographic archive that spanned ten years and three distinct projects: “The Innocents,” 2002, portraits of people wrongfully convicted of violent crimes; “An American Index of the Hidden and Unfamiliar,” 2007, images of sites and holdings generally inaccessible to the public; and “Contraband,” 2010, a series that documents, with clinical precision, items seized over a given week from airline passengers entering the United States. Depending on her subject matter, Simon employs