Alpine and Subalpine Vegetation of the Lake Tahoe Region. F. J. Smiley, 1915. Botanical Gazette 59, no. 4 (April): 265-286.
Includes information about geology, topology, climate (with temperature and precipitation charts) and lists of plants in the vegetation zones.

Lake Tahoe Watershed: Precipitation and Snow Data. 1869-1949.
Handwritten charts depicting snowfall and precipitation data and a description of the Charles Dukes papers in Special Collections. Dukes was the Truckee River Water Master from 1926 until his death in 1984.

Letters no. 1, 2, and 3 in A Lady's Life in the Rocky Mountains. Isabella Bird, 1879.
Letters written to her sister during her six-month journey by train and on horseback in the autumn and winter of 1873 from San Francisco to the Rockies. The first three pertain to the time she spent near Lake Tahoe. Originally published by G.P. Putnam's Sons in New York.