The Mill Company Office Exhibit features a desk and chair from the American Thread Company, a safe, a vintage typewriter that visitors can use, and numerous pieces of vintage office equipment that we ask visitors not to use. The owners of the earliest factories did not expect they would need much office space, and so 19th-century mill offices and office buildings tended to be quite small. In the 20th century, office space expanded greatly. The gray granite building below was constructed in the mid-1800s as the office of the Willimantic Linen Company. Less than 20 years later, the WLC had outgrown the space.