Wheeler dam and powerhouse. Visitors' reception room in Wheeler control building. Windows on three sides and overlook terrace adjoining offer complete view of plant and surroundings. Fourth wall used for description of TVA (Tennessee Valley Authority) program. Floor: gray-brown terrazo, divided into large squares by white metal strips. Wainscot, window sills, trim around doorway and curb at footlights brownish-red precast terrazo. Walls burlap covered, painted subdued tan. Windows aluminum. Ceiling and upper part of walls, plaster painted warm gray with warm off-white reflecting circles and cove across end (ceiling acoustic plaster). Lighting indirect. Lights in cove across end of room also throw downward, directed by lenses toward wall display and shielded by aluminum louvers. Behind curb inclined contol lens footlights and louver (aluminum) shielding air exhaust. Supply through ceiling grilles which border ceiling on two sides. Deep trim around doorway intended as shield while passing footlights. Display in gray, black and tan, keyed with general color scheme. Guard's desk of natural oak and ebomized birch, with raised ledge for visitor's registration