The Mark Twain Zephyr was an early diesel four-unit articulated zephyr train that was similar to the Pioneer Zephyr in style. The train was built by the Budd Company and was powered by a diesel engine produced by the Winton Engine Company. The train was named after the renowned author Mark Twain because it was scheduled to provide service from St. Louis, Missouri to Burlington, Iowa via his hometown Hannibal, Missouri. The train's exterior structure used stainless steel, and had a "shovel nose" front.[1]
The power car, number 9903, was named Injun Joe. The three trailer cars received other names of Mark Twain characters: Becky Thatcher, Tom Sawyer and Huck Finn. The train was christened on October 25, 1935, in Hannibal by Nina Clemens Gabilowitsch (1910-1966), the granddaughter and ultimately last descendant of its namesake. The ceremony was broadcast coast to coast on CBS radio. Two days later, it entered revenue service.[2]