| http://www.w3.org/ns/prov#value | - it is in a wooden frame covered by Plexiglas; ideally, the painting would be housed in a room with humidity and temperature controls, plus special lighting that would not accelerate fading. </p><p>At Ivy Green, Helen Keller's birthplace in Tuscumbia, director Sue Pilkilton is worried about the lack of lighting designed to eliminate harsh rays that can fade documents, textiles and other material.
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