Eleuthère Irénée du Pont (1771-1834) was the founder of E.I. du Pont de Nemours & Company. The collection contains original love letters from du Pont to his wife, Sophie (Dalmas) du Pont (1775-1828). He writes of how much he loves his wife and misses her when away. English transcribed extracts of several letters were done by their daughter, Sophie Madeleine du Pont (1810-1888).

Lavinia Dimmick (1874-1946) was a descendant of the founders of E.I. du Pont de Nemours & Company, a chemical research and manufacturing company. She was the daughter of Irene du Pont (1845-1877) and Edward Dimmick (1843-1895). Alfred Rée (1864-1933) was a chemist in England. This collection primarily consists of letters that passed between Alfred and Lavinia Rée during their courtship, ending with notes on their wedding reception, honeymoon travel and return to England.