Mid-Continent's 2025 "Whistle on the Wind" calendar features 3 color images and 10 black and white images of railroading past with informative captions. Images are a mix of historical Midwestern railroad imagery and more contemporary scenes taken at Mid‑Continent Railway Museum. Many dates feature “this day in history” factoids about railroads of the Upper Midwest as well as Mid‑Continent’s history. The calendar uses high-quality o-ring binding to ensure it hangs flatly against a wall.