Looking for something to do this weekend?

At the Crossroads of American Photography: Callahan, Siskind, Sommer, examines the pivotal interrelationship of three mid-century photographers who helped define the course of American photography: Harry Callahan, Aaron Siskind and Frederick Sommer (who lived in Prescott, Arizona). This exhibit has been held over until August 9th at the Scottsdale Museum…