Irénée du Pont (1876-1963) was a chemical engineer. He began work for E.I. du Pont de Nemours & Co. in 1903 in the Construction Division of the Black Powder Operating Department. After holding several positions within the company he went on to be the president of the DuPont Company. He served in this capacity from 1919 until 1926. The collection consists of photographs related to Irénée du Pont's family, personal interests, and involvement with organizations such as the Delaware Safety Council.

Xanadu was the name of the opulent Cuban estate of Irenee du Pont (1876-1963). He bought land on the Hicacos Peninsula of Cuba to build the four-story estate. This collection consists of photographs of the exterior and interior of the home near Varadero, Cuba.