in storage or temporarily on exhibition and are crowding out important exhibits and producing a congested condition in the Natural History, Industrial Arts, and Smithsonian Buildings". In 1924, architect Charles A. Platt drew up preliminary plans for a National Gallery of Art to be built on the block next to the Natural History Museum. However, this building was never constructed. In 1937, the National Gallery of Art became the National Collection of Fine Arts (NCFA), because Andrew Mellon insisted that the previous moniker be given to a new institution formed through his donation of a large art collection. By the 1950's, the NCFA still occupied a small space in the Natural History Building. In 1958, Congress finally granted the NCFA a home, the Old Patent Office Building, which was about to be vacated by the U.S. Civil Service Commission. The building would be shared with the planned National Portrait Gallery, with the NCFA occupying the northern half of the building. Renovation work on the building began in 1964. The NCFA opened in its new home on May 6, 1968. The museum's relocation came at an unfortunate time, as the neighborhood had been devastated a month earlier by the Martin Luther King assassination riots. The NCFA struggled to attract visitors over the following decades, as the streets around it remained bleak and lonely. This would remain a factor until the late 1990's, when the work of the Pennsylvania Avenue Development Corporation and the opening of the MCI Center (now Capital One Arena) across the street from the museum sparked a revitalization of the neighborhood. The NCFA gained a new branch in 1972, opening the Renwick Gallery, dedicated to design and crafts, in a historic building near the White House. In 1980, the name was changed to the National Museum of American Art, to better distinguish it from other federal art museums and to emphasize its focus on American artists. From 1982 to 1988, Charles C. Eldredge served as the museum director, followed by the tenures of Elizabeth Broun and Stephanie Stebich. In January 2000, the museum closed to begin a planned three-year, $60-million renovation of the Patent Office Building. To keep the museum's collection accessible to the public during the closure, many of the artworks were sent out in a "Treasures to Go" series of traveling exhibitions, billed as "the largest museum tour in history". The museum's name was changed to