On May 26, 1960, the 26th anniversary of the "Dawn-to-Dusk" dash, the original "Pioneer Zephyr" train (car numbers 9900, 505 and 570) was donated to Chicago's Museum of Science and Industry (MSI). Car number 500, which operated with the train from 1938, went along with "Mark Twain Zephyr" trainset 9903 to a party in Mount Pleasant, Iowa, for static display in a town park, but plans for the train's display did not work out; in 2002 car 500 and the "Mark Twain Zephyr" were stored in Granite City, Illinois with plans to display it in Fairfield, Iowa. As of 2020, there are plans to restore the trainset to operational condition.