Judy – My business partner, Paul Himmelstein, is a trained conservator who has been working with museums for many years consulting on environmental issues, including lighting. He is a member of the Illuminating Engineering Society (the professional organization of lighting designers) – Committee on Museums and Galleries. He is particularly interested in LED lighting, and has been working with museums and galleries on the changeover to this mode of lighting. I think he would be of considerable help to you in choosing the appropriate lamps (bulbs) and/or fixtures for your galleries. He can be contacted via email (firstname.lastname@example.org) or at 212-666-4630.