applied to the rear roofline to create the distinctive "transition" cars and maintain a streamlined appearance on El Capitan. The real transition cars were the 68-seat step down chair cars, which had a regular-height diaphragm at one end and a high-level at the other. The dining cars rode on six-wheel trucks due to their massive weight (all other cars rode on four-wheel trucks). The "Big Domes" were transferred to the Chief pool. As on many "named" long haul trains of the era, the rear of the observation car bore a lighted "Drumhead". These signs included "El Capitan" in a distinctive logotype with the railroad's logo. See also Amtrak Southwest Chief'' Passenger train service on the Atchison, Topeka and Santa Fe Railway Notes References External links Timetables: 1938, 1956 and 1967 Former Amtrak routes Named passenger trains of the United States Night trains of the United States Passenger trains of the Atchison, Topeka and Santa Fe Railway Railway services introduced in 1938 Railway services discontinued in 1973 Passenger rail transportation in Illinois Passenger rail transportation in Missouri Passenger rail transportation in Kansas Passenger rail transportation in Colorado Passenger rail transportation in New Mexico Passenger rail transportation in Arizona Passenger rail transportation in California Former long distance Amtrak routes