‘Twin Zephyr’ at Aurora By Angela Cotey | January 30, 2023 | Last updated on August 7, 2025 Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates Diesel locomotive 9901, named Zephyrus, leads Burlington Route’s Twin Zephyr into Aurora, Ill., about 38 miles into the streamliner’s Chicago–Minneapolis run sometime in 1937. L. E. Griffith photo