Haupers brought some of the style of Montparnasse to his work back in Minnesota. The 1926 work Two Girls, One Sailor shows the influence of Cubism and Jazz Age aesthetics in the angular faces and bodies and the strong shadows of the dancers, the violinist, and the sailor. The formal use of color and composition that Haupers developed in Paris can be seen throughout his works, from the angular red roofs of Provencale Landscape to the softer colors and trail of bright lights of View of Kellogg Boulevard From My Window.