Clarence King
A brilliant, restless explorer who led the first scientific survey of the American West and became the founding director of the U.S. Geological Survey.
1842–1901 (age 59)·American geologist·Birthday: January 6
Biography
Clarence King was a man of dazzling contradictions: a Yale-educated geologist with the soul of a mountain man, a celebrated scientist who lived a secret double life. In his twenties, he conceived and led the Fortieth Parallel Survey, a monumental, government-funded expedition that meticulously mapped a swath of the continent from the Sierra Nevada to the Rockies. His team's work revealed the mineral wealth of the Comstock Lode and set a new standard for scientific rigor in exploration. This triumph led President Hayes to appoint him as the first director of the U.S. Geological Survey in 1879. Yet, King's later years were marked by financial misadventures in mining and a profound personal secret. For over a decade, he lived as a Pullman porter named James Todd, marrying a Black woman and fathering five children, concealing his true identity as one of the most famous white men in America—a story of race, risk, and complexity that unfolded only after his death.
#1 When Clarence Was Born
The biggest hits of 1842
Clarence's Life & Times
The world at every milestone
1842Born
1847Started school
1855Became a teenager
1858Could drive
1860Could vote
1863Turned 21
President: Abraham Lincoln
1872Turned 30
President: Ulysses S. Grant
1882Turned 40
First electrical power plant opens in New York
President: Chester A. Arthur
1892Turned 50
President: Benjamin Harrison
1901Died at 59
Queen Victoria dies, ending the Victorian era
President: Theodore Roosevelt
Key Achievements
- Served as the first director of the United States Geological Survey (USGS) from 1879 to 1881.
- Led the pioneering Fortieth Parallel Survey, a systematic geological exploration of a vast section of the American West.
- Published the classic mountaineering and geological narrative 'Mountaineering in the Sierra Nevada' in 1872.
- Was among the first to identify and prove the glacial origins of Yosemite Valley and other Sierra landscapes.
Did You Know?
He successfully exposed a massive diamond field hoax in 1872, saving investors millions by proving the diamonds had been planted.
He was a close friend and correspondent of the writer Henry Adams.
For 13 years, he lived a secret life under the name James Todd, passing as a Black Pullman porter to marry a Black woman, Ada Copeland.
“The mountains are the means, the man is the end. The goal is not to reach the tops of mountains, but to improve the man.”
