In the early 1890s, the Knapp family from Illinois built a sawmill near Harding Heights, then moved it first to Miller Fork and then to the point now known as Glen Haven in 1897. The Boulder Presbytery, with assistance from the Knapp family, formed an association in 1903 and sold lots for a summer resort called Glen Haven. The association built the Glen Haven General Store in 1921.
In the early 1890s, the Knapp family from Illinois constructed a sawmill near Harding Heights, subsequently relocating it first to Miller Fork and then to the site now recognized as Glen Haven in 1897. The Boulder Presbytery, with assistance from the Knapp family, established an association in 1903 and sold parcels for a summer resort called Glen Haven. The association constructed the Glen Haven General Store in 1921.