The name of Dan Cody's yacht in F. Scott Fitzgerald's The Great Gatsby, the TUOLOMEE, was derived from the bucolic region of California where a number of prospectors during the Gold Rush made their fortunes. Tuolumne County, California, is in the central part of the state, near the border with Nevada, and the Tuolumne River is an important source of fresh water for the region's agricultural industry. By naming the yacht for this region, but misspelling the name, Fitzgerald could have been commenting both on the origins of Cody's wealth and on the mental degradation he regularly experienced as a result of the excessive consumption of alcoholic beverages. Hence, the following brief description of Dan Cody from Chapter Six of The Great Gatsby:
"Cody was fifty years old then, a product of the Nevada silver fields, of the Yukon, of every rush for metal since Seventy-five. The transactions in Montana copper that made him many times a millionaire found him physically robust but on the verge of soft-mindedness . . ."
By adapting the name of the region where prospectors found their fortune in the metals mining trade, Fitzgerald was cleverly linking his character to that era and that phenomenon.