Antique Real Photo Postcard, circa 1930s. Identified as the "Three Brothers" in Yosemite National Park, California. Divided back, AZO stampbox, unused. Condition: This is an original photo postcard, not a copy or reproduction. It is in excellent condition. Comments: The Three Brothers is a rock formation, in Yosemite Valley, California. It is located just east of El Capitan and consists of Eagle Peak, and Middle and Lower Brothers.