Detroit to Grand Rapids, Milwaukee, the Northwest
Biplane flying; black, red, and yellow; various shades of blue for the sky. Flying over green earth; yellow print bottom half.
The Kohler Aviation Corporation was founded by John B. Kohler in Grand Rapids, Michigan in 1929. It provided the "Bridge Across Lake Michigan" route from Milwaukee to Muskegon, adding destinations to Lansing and Detroit at a later date.
Getty Art and Architecture Thesaurus Term:posters