Columbia subject headings:
Harvard subject headings:
Brown & Sharpe.
Machine-tool industry--Rhode Island.
Manufacturing industries--Rhode Island--History.
Rhode Island--History.
Princeton subject headings:
Brown & Sharpe Manufacturing Company (Providence, R.I.)--History.
Industrial revolution--United States--History.
Labor--United States--History.
Machinery industry--United States--History.
Technological innovations--United States--History.
United States--Social policy.