The Cincinnati Art Museum’s ongoing “Moving Pictures” series of film screenings presents the highly regarded and prescient America’s Pop Collector: Robert C. Scull - Contemporary Art at Auction. The verity-style documentary by John Scott and E. J. Vaughn chronicles the 1973 auction of work collected by Scull, a taxi-company tycoon, which netted more than $2.2 million and forever established the marketplace value of contemporary art. Today, when pieces by contemporary masters routinely bring in millions, the amount raised at the Scull auction may seem small, but it was a watershed moment at the time.