1951 Map of Helena

About this map

The Trinity Alps define the northern reaches of this survey, where dramatic peaks like Thompson Peak and Wedding Cake overlook alpine features such as Mirror Lake and Sapphire Lake. This mid-century map documents a landscape heavily influenced by the California gold rush legacy, centered around the North Fork of the Trinity River. Settlement is sparse, characterized by mining camps and remote outposts. The southern half reveals the industrial imprint of the era, notably around Dedrick and the former locations of Canyon City and Coleridge. A dense network of lode and placer mines, including the Alaska Mine, Enterprise Mine, and the Mason & Thayer Mine, follows the drainage of Canyon Creek. High-elevation landmarks like the Backbone Ridge Lookout and Dedrick Lookout underscore the management of the surrounding Trinity National Forest.