1. The Death Valley Exploration Co. [verso] Collection: Persuasive Maps: PJ Mode Collection Format: Image Creator: Walter Knox & Co. Other Creators: Buck, Frank H. Date: 1929 Posted Date: 2015-08-25
2. Associated Gas and Electric System Collection: Persuasive Maps: PJ Mode Collection Format: Image Creator: Associated Gas and Electric System Other Creators: The Whiting-Graham Company Inc., printers. Date: 1929 Posted Date: 2024-04-25
3. The Death Valley Exploration Co., 1929 [letter] Collection: Persuasive Maps: PJ Mode Collection Format: Image Creator: Walter Knox and Company Date: 1929 Posted Date: 2015-08-25
4. Letter promoting shares in The Death Valley Exploration Company [letter] Collection: Persuasive Maps: PJ Mode Collection Format: Image Creator: Walter Knox and Company Date: 1929 Posted Date: 2015-08-25
5. Topographical Sketch of Properties The Death Valley Exploration Co. Courage, Death, Water and Perseverance Uncovered This Hidden Wealth Collection: Persuasive Maps: PJ Mode Collection Format: Image Creator: Walter Knox & Co. Other Creators: Buck, Frank H. Date: 1929 Posted Date: 2015-08-25