National Geographic : 1923 Apr
AN ELECTRIFIED ROAD IN THE CASCADES With its Cascade and Rocky Mountain divisions electrified, the Chicago, Milwaukee and St. Paul Railway has taught America how to conserve its fuel supplies. Rivers running down the mountains pull heavy trains up, and a trip by rail without coal-gas and cinders, and minus jerks and jars, becomes a delightful excursion amid some of the world's most majestic landscapes. The overhead wire type oftransmission (shown above) isused on the Milwaukee, the New Haven, and the Pennsylvania main line out of Philadelphia. The Pennsylvania Terminal and the New York Central use the third rail for power transmission.