Ganso focused on the textures of urban life and the human form. His work often features the New York waterfront or quiet interior scenes. In New York Roofs, he captures the geometry of the city without unnecessary decoration. He used dark tones and strong contrasts to create depth. Prints like Still Life with Bottle demonstrate a controlled use of light. His compositions such as Burlesque and Self-Portrait with Model explore the human figure with a direct, unsentimental gaze. He preferred to show his subjects as a series of shapes and shadows.

Modern collectors value the graphic clarity of his compositions. His prints look balanced in contemporary rooms because of their structural strength. Works such as Quincy Ségy. Winter offer a calm, atmospheric quality. The technical precision of his woodcuts provides a tactile feel to the paper. His art provides a direct connection to the American Social Realist movement. These pieces suit minimalist interiors that require strong black and white elements.