His work is defined by a controlled palette and a meticulous attention to the physical presence of his subjects. In portraits such as Charles Pickering Bowditch and Professor Kuno Francke, he captured the quiet authority of scholars and historians. Gaugengigl preferred small formats that required viewers to stand close to the canvas. He rendered textures like wool and paper with a level of detail that suggested the weight of the objects.

Collectors today value Gaugengigl for his ability to convey a sense of gravitas without relying on large, imposing canvases. His portraits of figures like John Lowell and George Foot Moore provide a sophisticated atmosphere for a study or library. The realism of his work offers a direct connection to the academic history of the late nineteenth century. These prints bring a formal, historical character to modern interior spaces.