The unveiling of a plaque dedicated to the memory of Major John Wesley Powell at a Powell Commemorative Ceremony on Lake Powell. From left to right, the individuals identified are Governor Jack Williams of Arizona; Chairman Raymond Nakai of the Navajo Tribal Council; James R. Smith, Assistant Secretary of the Interior; and Governor Calvin L. Rampton of Utah. The plaque reads as follows: "Lake Powell; Major John Wesley Powell led scientific exploration parties down the Green and Colorado Rivers in 1869 and in 1871-72. Years later Powell became a leader in government science programs, headed the U. S. Geological Survey and the Bureau of American Ethnology, and advocated enlightened land and water conservation policies which resulted in the passage of the Reclamation Act of 1902. In commemoration of his courage, his wisdom, and his years of public service, the reservoir behind Glen Canyon Dam as been named Lake Powell."

The face of Hoover Dam as seen from the river. Part of the power plant's hydroelectric generators, as well as the canyon wall outlets and stoney gate are visible on the Nevada (left) side. The spillway tunnel is visible on the Arizona (right) side. During the years of lobbying leading up to the passage of legislation authorizing the dam in 1928, Hoover Dam was originally referred to "Boulder Dam" or as "Boulder Canyon Dam", even though the proposed site had shifted to Black Canyon. The Boulder Canyon Project Act of 1928 (BCPA) never mentions a proposed name or title for the dam. When Secretary Wilbur spoke at the ceremony starting the building of the railway between Las Vegas and the dam site on September 17, 1930, he named the dam "Hoover Dam", citing a tradition of naming dams after Presidents, though none had been so honored during their terms of office. After Hoover's election defeat in 1932 and the accession of the Roosevelt administration, Secretary Ickes ordered on May 13, 1933 that the dam be referred to as "Boulder Dam". In the following years, the name "Boulder Dam" failed to fully take hold, with many Americans using both names interchangeably and map makers divided as to which name should be printed. In 1947, a bill passed both Houses of Congress unanimously restoring the name to "Hoover Dam".

Black and white photo taken by C. P. Squires on the occasion of planting the first tree in the courthouse park, Las Vegas, Nevada. Date, March 1911, as near as can be fixed. The building shown at left is the first Clark County Court House (now used for Las Vegas City Library) which had been constructed by popular subscription by Las Vegas Business men as promised by them during the county division campaign in 1908-1909. This building provided sufficient quarters for the county offices for five years, following which, the present court house was built. Persons shown, so far as their identity can be remembered are: holding the tree- Ed W. Clark and using the shovel is Judge E. J. L Taber. Others, left to right: Charlie Ronnow, Judge W. R. Thomas, unidentified, unidentified, Bob Dillon, Frank A. Stevens, Harley A. Harmon, and Dr. Roy W. Martin.