Class 4 trails pony express harvesting forests2015 Class 3 settlers lust for silver 2015 Class 2 fremont and gold 2015 Class 1 tahoe geology and native americans 2015 Class 8 cabins castles grand estates casinos winter skiing 2015 Class 7 summer farming and ice harvesting auto highways airfields2015 Class 6 slideshare tahoe natural wonders coming of railroad and lure of the lake 2015 Class 5 early hotels mile markers boats 2015 
