Duane Morris eschewed the typical wood-paneled walls that adorn many law offices in favor of blank, white canvases used to display the art collection of Chairman Emeritus Sheldon Bonovitz and his wife, Jill.

But a tour of the firm’s Philadelphia headquarters today may leave an art lover wanting. In a number of places where art once hung, there are empty hooks with signs that read "On loan to the Philadelphia Museum of Art."