[Illustration: Members of International Geological Congress on tour of Parks at Bryce Canyon, August 21, 1933. A. M. Woodbury, guide (seated, 5th from left): K. E. Weight, Naturalist at Bryce (Standing, 3rd from left): Dee Chamberlin and Chauncey Parry, drivers (standing right).] When the Utah Parks Company took over the Wylie camp in Zion, it was planned to construct a large hotel, but Director Mather firmly refused permission. He finally agreed to the lodge and cabin system, now serving the Park tourists. El Escalante Hotel in Cedar City was ready by the season of 1924. New accommodations were under construction in Bryce Canyon and Cedar Breaks. Reports from elated visitors, improvement of roads and accommodations and consistent advertising all resulted in vastly increased travel. The tourist traffic jumped from 8400 in 1924 to 16,817 in 1925. About half that number visited North Rim and presumably Bryce and Cedar Breaks. The tide was in full flow. For the season of 1925 new tourist busses with demountable tops for viewing the spectacular canyon walls were purchased. Busses, however, served only a small part of the traveling public, for America was on wheels and the roads were now such that auto traffic could roll in easily. The Grotto Campground was enlarged, equipped, and supplied with water. The survey of the Pine Creek road and tunnel was completed and Wayne Wonderland was dedicated. Richard Evans was borrowed from the U.S. Geological Survey and served as acting superintendent during the tourist season for two years, while Walter Ruesch remained in charge during the balance of the year. Two permanent park rangers assisted Ruesch, Donald J. Jolley, appointed August 1, 1920, and Harold Russell, who had worked summers from 1920 to 1923 and who received permanent appointment in October of the latter year. All three were closely associated with developments and improvements in the canyon. In 1927, E. T. Scoyen was appointed permanent superintendent. The Nature Guide Service in Yosemite and Yellowstone had proved so successful that it was decided to extend such services to other parks. It was initiated in Zion by the writer, June 19, 1925, and continued to mid-September. There was no precedent to follow, but the work gradually grew through succeeding summers into the Naturalist Service. During the next five summers, museum collections of natural history specimens, pioneer relics, and library books gradually accumulated and a museum was established in 1928. Information concerning the history, flora, fauna and geology of the canyon was collated. Lectures at the camp ground, at the Lodge, and the guided trips along the Narrows trail were developed and pictures and lantern slides were shown. In 1929, a mimeographed publication, the _Zion-Bryce Nature Notes_, was undertaken and a Natural History Association was organized to handle publications.