How the humble frame went from sidekick to the spotlight

The picture frame — once considered inconsequential — has come into its own as a work of art at museums around the country.The permanent collection at the University of Rochester’s Memorial Art Gallery holds important paintings by greats like Monet, Cézanne, Matisse, Homer, and Cassatt. So a recent tweet from the museum that saluted what is perhaps the art world’s most overlooked supporting actor — the humble picture frame — might have seemed out of cha