On the Los Gatos Creek tributary a population of California Golden beavers ("Castor canadensis subauratus") has been re-established between Lake Elsman and Lexington Reservoir. The beaver were re-introduced to the portion of Los Gatos Creek where it enters Lexington Reservoir sometime prior to 1997, and recently, a beaver reportedly served as "a hearty meal" for a local mountain lion. Video documentary by Greg Kerekes documented beaver in the Guadalupe River mainstem in downtown San Jose in April, 2013. These are the first beaver recorded in the Santa Clara Valley since zoologist James Graham Cooper captured one in Santa Clara for the Smithsonian Institution on Dec. 31, 1855. Historical evidence of beaver in the area includes reference by Captain John Sutter who around 1840 recorded that 1,500 beaver pelts were sold "at a trifling value" by the Indians to Mission San José. In 1840, from the port of Alviso, California, beaver pelts, cattle hides and tallow were shipped to San Francisco. In addition, in 1828 fur trapper Michel La Framboise travelled from the Bonaventura River to San Francisco and then the missions of San José, San Francisco Solano and San Rafael Arcángel. La Framboise stated that "the Bay of San Francisco abounds in beaver", and that he "made his best hunt in the vicinity of the missions". Golden beaver were apparently wiped out by trappers in the Bay Area sometime after the end of the California Fur Rush.