Angus M. Woodbury,
A History of Southern Utah and Its National Parks…
“ 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. ”
