Visitors to the International UFO Museum in Roswell, New Mexico pass by a piece of art entitled "We Have Five of Them" by Las Vegas artist Marcus Tracy. Wednesday, July 2, 1997. The museum had over 2,000 visitors Monday and expects the crowds to increase throughout the week as tourists pour into town for the 50th anniversay of the famous Roswell Incident. (AP Photo/Susan Sterner)

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