E. T. Elliott, Popular Science Monthly (1879)
“ From the evidences of the rocks and the deposits of the mountain valleys it is fair to deduce the conclusion that, as in time the waters gradually receded, the first part of America to assume any dimensions was the backbone of the continent, or that elevated portion known as the Rocky Mountains, which had probably never at this period been entirely covered with water, thus affording a long, continuous stretch of dry ground on which man and beast could live and wander as they listed. ”
