Historical Towns (8) Gilman, Colorado History Click on an image to get more details or a direct link. View of Gilman, Colorado ca. 1925 View of the mines at Gilman, Colorado 1908 Belden mine complex in Eagle River Canyon ca. 1920s Belden (below) and Gilman (above) Gilman, Colorado ca. 1886 Gilman, Colorado after the 1899 or 1900 fire Mines at Gilman ca. 1920 Painting of the Iron Mask Mine at Gilman, Colorado - by Harry Learned 1886