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On a visit to Charlestown Navy Yard in Boston, Mass., during National Park Week, Mrs. Laura Bush and students from Warren-Prescott School, participate in an electronic field trip to Carlsbad Caverns National Park, N.M., Tuesday, April 24, 2006. Electronic field trips allow students to virtually visit, via the internet, US National Parks and are made possible through partnerships between Ball State University and museums across the country. White House photo by Shealah Craighead
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