Merrill J. Mattes, Colter's Hell and Jackson's Hole
“ The Rocky Mountains skirting this country on the East, dwindle from stupendous heights into sloping ridges, which divide the country into a thousand luxurious vales, watered by streams which abound in fish. The most remarkable heights in any part of the great backbone of America are three elevated insular mountains, or peaks, which are seen at the distance of one hundred and fifty miles: the hunters very aptly designate them the Pilot Knobs they are now generally known as the Three Paps or ‘Tetons’; and the source of the Great Snake River is in their neighborhood.... ”
