Bunnell drafted an article about the trip, but destroyed it when a newspaper correspondent in San Francisco suggested cutting his 1,500- foot (460 m) height estimate for the valley's walls in half; the walls are in fact twice the height that Bunnell surmised.[19] The first published account of Yosemite Valley was written by Lt. Tredwell Moore for the January 20, 1854, issue of the Mariposa Chronicle,[8] establishing the modern spelling of Yosemite.