If your looking for period ceiling lighting Tom will have the largest selection of antique ceiling lighting available in the USA.  You can read about his company below or click on the link below to visit his incredible website.  The website has a thousand pictures of ceiling lights and period antique fixtures he stocks or has sold. 

       "At Genuine Antique Lighting we try to inventory the lighting that was originally in the local architecture. Located in Boston’s historic South End, we have placed many antique lights in renovated Brownstones in the Back Bay and South End. We have also worked with customers who wanted to light rooms in renovated Victorians, Greek Revivals, Colonial Revivals, Arts and Crafts Bungalows and various other architectural styles throughout the United States.

In our 3000 sq. ft. showroom/workshop, we display over 500 Antique Lights for your ceilings & walls or outside your home that date back from 1850 to 1950. Since being in business for well over three decades we have developed a considerable network of suppliers. We buy Antique & Vintage Lighting that sell to people who want their homes to feel comfortable and familiar. Our lights are for all rooms in your house, whether small or large, low or high ceilings."