The almost 11,000 foot Mount Baker overlooking Puget Sound in the Cascade Mountains of Washington Washington Territory began full volcanic activity and was termed as in full activity on November 22, 1859. Four days later, passengers on a steamer saw vast plumes of smoke rising from the peak. Activity increased into December towards a full eruption. (By John Osborne)
Source Citation
Edward Singleton Holden, A Catalogue of Earthquakes on the Pacific Coast, 1769-1897 (Washington,D.C.: Smithsonian Institution, 1898), 55-56.