Charles Frederick Hoffmann (1838–1913) was born in Frankfurt, Germany, 1838. After receiving an education in engineering, he emigrated to America. In 1857 he was topographer for Frederick Lander’s survey to the Rocky Mountains. He came to California in 1858. He was recruited by Josiah Whitney to join the California Geological Survey because of his valuable skill as a topographer. Mr. Hoffmann is largely responsible for introducing topography to the United States. He helped explore the Sierra Nevada of California, U.S. from 1860 through 1870, and 1873 through 1874. As a member of the Survey, Hoffmann created the official maps from the expeditions made by the survey team. Hoffmann achieved a number of first ascents in the Sierra Nevada: