Ernest Ingersoll,
The Crest of the Continent: A Summer's Ramble in the Rocky Mountains and Beyond
“ Prospecting the higher slopes, silver ore was discovered, and a host of miners came in, and began digging on all the hills. The famous “Emma,” the “Flag Staff,” and dozens of other mines were opened. A town, well-called Alta (high) , sprang up, and filled all the level land at the head of the valley, while buildings, and machinery and dumps dotted the mountain sides to their topmost ridges. ”
