| References: | Blake, Wm. P. (1855), Observations on the extent of the gold region of California and Oregon, with notices of mineral localities in California and of some remarkable specimens of crystalline gold: American Journal of Science, 2nd. Series: 20: 82; Blake, Wm. P. (1856), Reports of explorations and surveys to ascertain the most practical and economical route for a railroad from the Mississippi River to the Pacific Ocean: 33rd. Congress, 2nd. Session, House Doc. 91: Vol. 5, part 2, geological report: 289. |