Charles Sinclair Weeks (June 15, 1893 – February 7, 1972), better known as Sinclair Weeks, was an American politician who served as a United States Senator from Massachusetts in 1944 and as United States Secretary of Commerce from 1953 until 1958, during President Dwight D. Eisenhower's administration.

He was a businessman in various industries, including the First National Bank of Boston, the United Carr Fastener Corporation and as President of Reed & Barton of Taunton Massachusetts.

President Dwight Eisenhower appointed him the United States Secretary of Commerce from January 21, 1953, until November 10, 1958.

They intended the historic Arts & Crafts-style 1913 Lodge and 1912 Observation Tower on the summit to educate the public about sustainable forestry management.

Today Weeks State Park, with its historic 1910 NH Scenic Byway road to the top, Lodge and Tower, attracts thousands of visitors annually to enjoy a panoramic 360-degree view of the White Mountains of New Hampshire and the Green Mountains of Vermont.