The upstream face of the Hoover Dam, as seen from the Arizona side.

Ken Holder, right, directing the Page High School Choir as they provide entertainment for the Powell Commemorative Ceremony.

Chairman Raymond Nakai of the Navajo Council addresses the Powell Commemorative Ceremony at Lake Powell.

Raymond Nakai of the Navajo tribe, left, addresses the crowd at the Powell Commemorative Ceremony held at Lake Powell. At right is Bill Diamond, a professional river runner who portrayed Major John Wesley Powell in one of the exhibits.

Governor Calvin L. Rampton of Utah addresses the audience at the Powell Commemorative Ceremony on Lake Powell. Sitting at left are Governor Jack Williams of Arizona and Assistant Secretary of the Interior James R. Smith.

Harthon "Spud" Bill, Deputy Director of the National Park Service, addresses the audience at the Powell Commemorative Ceremony on the shore of Lake Powell.

A distant view of the speakers' stand, exhibit area, an assembled crowd, Lake Powell, and Glen Canyon Dam at the Powell Commemorative Ceremony.