Guidebook to Canyonlands, 1974

I found a book that used to be my brother's called "Guidebook to Canyonlands" published in 1974. In the chapter on Arches, it talks about the Fiery Furnace...
"Tourists are not allowed into the Fiery Furnace alone. In fact, there are locked gates to prevent unauthorized persons from wandering into the convoluted canyons and becoming lost. Guided tours...are conducted by the Park Service during the summer season. Contrary to the impression given by its name, it is usually 8-10 degrees cooler than other sections of the park because of its deep, shady canyons. It was named for its fiery glow in the evening sunset, not its temperature.
...it encompasses roughly eight square miles of towering monoliths, natural bridges, arches, and pinnacles of swooping graceful form."

In another portion of the book..... about Park Avenue.
"the second parking area for Park Avenue is close to a large formation resembling a pipe organ. Park rangers have given up trying to place a marker by The Organ, as the sign is continuously removed by pranksters and placed at the foot of some towering phallic pinnacle."
Raye Carlson Price, 1974