In 1826, Asa Jillson and his brother, Seth, from Rhode Island, arrived in the Borough of Willimantic in the Town of Windham, where they became industrial pioneers, setting up mills and building a stone house, built of gneiss granite quarried from the Willimantic River. Asa’s son, “Colonel” William Lawrence Jillson, had arrived with his father and eventually became the agent for his father and uncle’s textile manufacturing firm, the A. & S. Jillson Company. William L. Jillson worked with the machinist Ames Burr Palmer to invent the Jillson and Palmer cotton opener, which came to be used throughout the country. Jillson founded other textile factories and, when he died in 1861, control of his companies passed to his son, William Curtis Jillson, who became one of Willimantic’s most prominent citizens. By the 1970s, the stone Jillson House had fallen into disrepair. It was restored and became the home of the Windham Historical Society.