“Twenty-eight miles from /Deer Creek was the Upper or Mormon Ferry on the North Platte, near modern Casper. The eaarliest travelers found it, of course, in a state of nature and were utterly dependent on their own efforts. Tradition tells us that the crossing selected in pre-prairie-schooner days was three miles down from the later ferry site.
It was a favorite with the Indians, who would make rafts of their lodgepoles, pile them with household goods and attach thongs of buffalo hide, with which swimming braves towed them across the river. The fur traders usually waited for a favorable day and crossed with their goods packed in bullboats, floating the heavy carts.”