Preserving and providing access to the special collections of the Old Slater Mill Association.
Celebrating a century of historic preservation in Rhode Island
Old Slater Mill Association (OSMA) was formed in 1921 to save the 1793 Old Slater Mill from demolition. Simon Willard Thayer, President of the Lebanon Knitting Company, purchased the mill in 1920, and held title until the OSMA could incorporate and accept responsibility for the building’s restoration.
Over a century, OSMA expanded the site to include the 1810 Wilkinson Mill, the 1758 Sylvanus Brown House, Hodgson-Rotary Park, and Slater Mill Park. In 2021, the Old Slater Mill National Historic Landmark was accepted by the U.S. Government to formalize the Blackstone River Valley National Historical Park. In 2024, Slater Mill Park was acquired by the Pawtucket Redevelopment Agency for use as a riverfront municipal park.
In 2023, OSMA established the Slater Industrial Archives to preserve and provide access to the vast special collections of the OSMA.