The first major supplier of denim fabric in the United States, located in a New Hampshire factory town. This was the source of denim used on the first pairs of jeans by Jacob Davis and Levi Strauss.
The Amoskeag Manufacturing Company was established in 1838 and by 1900 claimed to be the world’s biggest textile producer; it later declined due to poor management and industrial unrest. Amoskeag denim was used exclusively for Levi’s 501 jeans until 1915.
Source: Nouvelle de Nîmes Nº 5: The Denim Dictionary and Paul Trynka