The first Zephyr train, later called Pioneer Zephyr, at Aurora, Ill., on nonstop Denver–Chicago run, May 26, 1934.
The first dome car, Silver Dome, rebuilt from a conventional coach at Burlington’s Aurora shops in July 1945.
Minneapolis–Chicago Morning Twin Zephyr at Brookfield, Ill., May 1965.
Chicago–Omaha Fast Mail ready to depart Chicago Union Station, 1959.
Wallace W. Abbey
Denver–Chicago Denver Zephyr at Galesburg, Ill., mid-1940s.
Henry J. McCord
Suburban trains powered by 4-6-0s in the yard at Downers Grove, Ill., circa 1920.
L. E. Griffith coll.
E5 and new gallery cars on Aurora–Chicago suburban train east of Naperville, Ill., circa 1950.
Chicago–Minneapolis Afternoon Twin Zephyr north of Savanna, Ill., 1965.
Minneapolis–Chicago Morning Twin Zephyr approaching Chicago Union Station, 1943.
Classic Trains coll.
Oakland–Chicago California Zephyr at Brookfield, Ill., May 1965.
Minneapolis–Chicago Morning Twin Zephyr at St. Paul, 1940s.
H. W. Pontin
Denver–Dallas/Ft. Worth Texas Zephyr departing Denver, May 1947.
L. O. Merrill
Chicago–Denver Denver Zephyr, with streamlined 4-6-4 4000 substituting for diesels, near Keenesburg, Colo., February 1938.
Minneapolis–Chicago Twin Zephyr trains on pre-inaugural publicity run, side-by-side, from Aurora to Chicago, passing Downers Grove, Ill., April 14, 1935.
Willard V. Anderson
Kansas City–Chicago American Royal at La Grange, Ill., November 1945.
E8 9974 with westbound train 209 at Brookfield, Ill., May 1965.
Chicago–Minneapolis Morning Twin Zephyr at Savanna, Ill., June 1948.
Baldwin switcher pulling consist of Denver Zephyr from Chicago Union Station to CB&Q coach yard, August 1964.
Denver–Billings, Mont., train 29 in Wind River Canyon south of Thermopolis, Wyo., mid-1960s.
Kansas City–Lincoln, Nebr., Pioneer Zephyr at St. Joseph, Mo., late 1930s.