"Metal Display Fixtures" by L. A. Darling & Co. Cat. #140, p. 6; Window Display Fixtures #2017, center right of page.. "Furniture of Romance" by Ficks Reed Co., p. 11 Wall Rack #8331 top left on page..
The ornamental design for an entertainment center, as shown.
FIG. 1 is a perspective view of an entertainment center showing my new design;