This portrait of Grove Carl Gilbert(1843-1918)
was done in the 1920's by Abner Lowe. Gilbert joined the
Geological Survey on its founding in 1879 and served as its
first Chief Geologist (1889-1892). Gilbert made significant
contributions to the fields of tectonics, hydrology, glaciology,
earthquake studies, and geological methods. He is considered
one of the most distinguished American Geologists.