Caption: “In July 1984 Roger Puta photographed the CB&Q’s Pioneer Zephyr during the celebration of the 50th Anniversary of its historic non-stop Denver-to-Chicago run. Then it was just outside Chicago’s Museum of Science and Industry. Now it is inside the Museum in an excellent display.”


The Pioneer Zephyr is a diesel-powered railroad train formed of railroad cars permanently articulated together with Jacobs bogies, built by the Budd Company in 1934 for the Chicago, Burlington and Quincy Railroad (CB&Q), commonly known as the Burlington. The train featured extensive use of stainless steel, was originally named the Zephyr, and was meant as a promotional tool to advertise passenger rail service in the United States. The construction included innovations such as shotwelding (a specialized type of spot welding) to join the stainless steel, and articulation to reduce its weight.