Irving & Casson of Boston, Massachusetts.

The firm Irving & Casson of Boston, Massachusetts, specialized in interior design, interior woodwork, and mantels, and also served as a furniture maker. They sold luxury items at their showrooms in both Boston and New York. The firm was founded in 1875. It had two facilities. One was in Boston, the other was in East Cambridge. Its specialty was interior woodwork and mantels, but it also made. In 1914 or 1916, the firm merged with A. H. Davenport, a move that expanded their influence and capabilities. Notable commissions included the chapel at Duke University, the interior of the United Nations Headquarters in New York City, the White House, and the chapel at Groton School, highlighting their influence on prominent architectural projects.