rail link between the Rock Island at Tucumcari New Mexico and Southern Pacific Lines at Tucson Arizona, via El Paso and Douglas. With the passing of the senior members of the Phelps Dodge partnership, the firm was dissolved and replaced in 1908 with Phelps Dodge & Company, a holding company of all the subsidiary properties. Douglas became the first president. This was reorganized in 1917 as the Phelps Dodge Corporation, with each of the subsidiary companies becoming operating divisions. Douglas became CEO with son Walter as president, and helped transform the corporation into a Fortune 500 company. He began reducing his business commitments and delved into philanthropy more until his death in 1918, at his home in Spuyten Durvil, New York. James Douglas was always known as Dr. Douglas or Prof. Douglas. His son, James S. Douglas Jr., or "Rawhide Jimmy" (1867–1949), managed the Phelps Dodge works at Nacazori before heading off on his own and building a major fortune with the United Verde Extension mine in Jerome, Arizona. His Jerome mansion is open to the public as the Jerome State Historic Park. Walter Douglas followed in his father's footsteps as manager of the Copper Queen, then president and finally CEO of Phelps Dodge. James S. Douglas Jr.'s son (Dr. Douglas' grandson) Lewis Douglas was elected U.S. Congressman representing Arizona, served within President Roosevelt's administration, and later was appointed Ambassador to Great Britain. Publications and philanthropy Throughout this time, Douglas maintained an interest in Canadian history and heritage. He wrote several books on the subject in his lifetime, namely Canadian Independence, Old France in the New World, and New England and New France—Contrasts and Parallels in Colonial History. In addition to bailing Queen’s University out of a financial crisis with approximately a million dollars from his own pocket, Douglas also established the first chair in Canadian and Colonial History there in 1910. He also financed many libraries, such as the library of the Literary and Historical Society of Quebec, where interest from his donations is still used to purchase books. He had built and supported libraries in each of the Phelps Dodge major mining camps and smelter towns. Medical philanthropy Douglas was dedicated to investigating the effects of radiation on cancer following the treatment of his daughter in England. In 1911, to devise a method to more cheaply produce radium, he directed the Phelps Dodge research lab under chemist George