Joseph LeConte
A fascinating account of a horseback trip to Yosemite and the High Sierra by a group from the University of California in 1870. The ten "scholars" were led by Professor Joseph LeConte, a popular instructor and an expert in a number of the natural sciences, particularly geology.
A Journal of Ramblings Through the High Sierras of California by the "University Excursion Party (High Sierra Classics Series)