Joseph Raphael De Lamar (February 25 1848 – July 1 1918) was a French‑born American mining magnate, financier, and philanthropist. He amassed a substantial fortune through the development of gold, copper, and silver mines in the United States and Canada, and later became a noted benefactor of educational and cultural institutions.
Early life and education
Born in Basse-Terre, Guadeloupe, to French parents, De Lamar moved to New York City with his family in 1852. He received a limited formal education and entered the workforce at an early age, initially working as a clerk in a New York mercantile house.
Mining career
In the 1870s De Lamar shifted his focus to mining. He first gained experience in the Nevada silver‑lead districts, where he held minor interests. By the 1880s, he had consolidated several claims and established the De Lamar Consolidated Gold Mines, Inc., which operated large-scale gold and copper operations in Nevada, Idaho, and the Canadian Yukon. His most prominent ventures included:
- The Lucky Friday Mine (Idaho) – a copper mine that became a leading producer under his direction.
- The Last Chance Mine (Nevada) – a gold mine that contributed significantly to his wealth.
- The Loring Gold Mine (Yukon) – part of the Klondike gold rush, where De Lamar invested heavily.
His business model emphasized vertical integration, controlling both mining operations and associated smelting and refining facilities. By the early 20th century, his enterprises employed thousands of workers and generated multi‑million‑dollar revenues.
Financial activities and diversification
Beyond mining, De Lamar invested in railroads, real estate, and banking. He held a directorship on the board of the New York Mortgage Company and financed the construction of the De Lamar Building in New York City (completed 1912), a 12‑story office tower considered an early example of steel‑frame architecture.
Philanthropy and legacy
De Lamar was a benefactor of several educational institutions. Notably, he donated funds to the University of Oregon, which named a residence hall—De Lamar Hall—in his honor. He also contributed to the establishment of a public library in his hometown of St. Louis, Missouri, and supported medical research initiatives.
Personal life
De Lamar married twice. His first marriage to Elizabeth L. Hinton produced three children; after her death, he married Margaret M. Turner in 1905. He maintained residences in New York City, a summer estate in Newport, Rhode Island, and a ranch in Wyoming.
Death
Joseph R. De Lamar died of a heart attack on July 1 1918 while traveling aboard the ocean liner SS Baltic en route to Europe. He was interred in the family mausoleum at Green-Wood Cemetery in Brooklyn, New York.
Posthumous recognition
Following his death, De Lamar’s mining holdings were reorganized under new corporate structures. His contributions to early 20th‑century industrial development are recognized in mining history texts, and several geographical features, including De Lamar Mountain in Alaska, bear his name.
