Arrowhead Springs, CALIFORNIA - Arrowhead Hot Springs Hotel - 1911:  Arrowhead Springs is a highly mountainous neighborhood in the 81-square-mile (210 km2) municipality of San Bernardino, California, officially annexed to the city on November 19, 2009.  The neighborhood lies below the Arrowhead geological monument, which is California Historical Landmark #977.  The natural geologic formation of light quartz on the side of the mountains presides over San Bernardino and the rest of the San Bernardino Valley. The city of Lake Arrowhead, California and the adjacent lake, Lake Arrowhead Reservoir, take their names from the formation as does Arrowhead Water. The Native Americans of the San Bernardino Valley thought the Arrowhead pointed to the artesian hot springs below, which are the site of the historic Arrowhead Springs Hotel, Spa, & Bungalows. The region is also home to the Arrowhead Country Club and Golf Course.  The historic Arrowhead Springs Hotel and Spa encompasses 1,916 acres (7.75 km2) directly beneath the Arrowhead geological monument that presides over the San Bernardino Valley. The present building was designed by architects Gordon B. Kaufmann and Paul R. Williams.  The resort contains hot springs, in addition to mineral baths and steam caves located deep underground. It featured a Pacific Electric "Red Car" rail line connecting the hotel to San Bernardino and the Greater Los Angeles area. Long the headquarters for Campus Crusade for Christ, the site remained largely vacant and unused since their operations moved to Florida. In May 2016, the San Manuel Band of Mission Indians purchased the Arrowhead Springs property.  This Divided Back Era postcard, mailed in 1911, is in good condition.  Published by Newman Post Card Co.  :Los Angeles.