spoken in Northern California, especially in Sacramento, Plumas, Tehama and Siskiyou counties, the latter with both large French ancestry and speaking populations...

and settlements sprang up along the Siskiyou Trail as gold was discovered elsewhere in California (notably in Siskiyou County). The nearest deep-water seaport...

brigades were sent south from Fort Vancouver, along what became known as the Siskiyou Trail, into Northern California as far south as the San Francisco Bay Area...

Northwest, extending as far east as the Rocky Mountains and, by using the Siskiyou Trail, as far south as California's Central Valley. After the Spanish possession...