The Monadnock Mills timeline chronicles the evolution of a textile manufacturing hub in Claremont, New Hampshire, starting in the 1830s when it was originally the Sugar River Manufacturing Co. As economic conditions turned, it was sold and renamed the Monadnock Mills in the 1840s. By the 1860s, the company expanded by constructing Mill No. 2 and became known for producing dimity fabric. The late 19th century saw further expansion and specialization in cotton products, including Marsailles bedspreads. The early 20th century marked local ownership's return and accolades for their textiles. During WWI, the mills were pivotal in producing materials for the U.S. Government. The 1920s saw peak production with high-profile orders from hotels and the White House, while the 1930s introduced innovations like the patented Marseray spread.

Following multiple ownership changes, WWII shifted the focus to airplane parts manufacturing, and efforts were made to repurpose the mills with various industries. The mills were recognized for historical importance in the late 20th century, sparking renovations and repurposing efforts. In the 2000s, the City of Claremont took initiatives for redevelopment, leading to revitalized uses like office space and a hotel, completed in 2009. Future plans include converting Mill No. 3 into loft-style condominiums and commercial spaces, representing the continued reinvention and adaptation of these historic structures. The timeline is punctuated by a series of renovations and repurposings that reflect broader economic and industrial changes over nearly two centuries.