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 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 and the High Sierras: A History of the Comstock Lode & Mines. Dan de Quille, 1889.
Excerpts from A History of the Comstock Silver Lode and Mines Virginia, NV: F. Boegle. Dan De Quille was the editor of the Territorial Enterprise in Virginia City and chronicled much of the Comstock area history.

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.'"