Lehigh legacy By Angela Cotey | October 14, 2024 | 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 Three Lehigh Valley Alco C420s fly the company flag at Treichler, Pa., in May 1974. The units were delivered in the mid-1960s in gray and yellow. Mike Bednar photo