From a movie trade magazine of 1915 we take this interesting article about the newly opened Regent in East Liberty, now the Kelly Strayhorn Theater. Click on the image for a much larger version.
“The foyer is decorated in the Adams period” probably means in the Adam style—that is, the neoclassical style made popular by the Adam brothers in the 1700s and undergoing a revival in the early twentieth century.
The picture below shows how the theater looks today: stripped of its projecting awning, but otherwise very much the same.