Lake of the Sky: Lake Tahoe. George Wharton James, 1915. New York: J. F. Tapley Co.
A 385-page digital book. A history of the earlier years of the Tahoe area. Includes photographs; Tahoe-related appendices on Mark Twain, Thomas Starr King, John Le Conte, and John Vance Cheney (with excerpts of their writings) and resorts.

Lake Tahoe Watershed Assessment. Dennis D. Murphy and Christopher M. Knopp, eds., 2000. Volumes I and II. Gen. Tech. Rep. PSW-GTR-175. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture; 753 p.
The first attempt to collate, synthesize, and interpret available scientific information with a comprehensive view toward management and policy outcomes.

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.

Lake Tahoe. (Scientific American, 1886). 1886. Scientific American (Setpember 25): 196.
A short piece about the depth of Lake Tahoe and the temperature of the water in various spots.

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.

Physical Studies of Lake Tahoe. John Le Conte, 1883-1884. Overland Monthly
Part I, November 1883, pp. 506-515: History of the lake's name; temperature/depth chart, with comparisons to Lake Geneva; transparency measurements; "why drowned bodies do not float."
Part II, December 1883, pp. 595-612: "Colors of the Waters of Lake Tahoe."
Part III, January 1884, pp. 41-46: "Rhythmical Variations in Levels of Lakes: or 'Seiches.'"