Frederick Albion Ober,
Travels in Mexico and life among the Mexicans
(1884)
“ In no country in the world can you pass so rapidly from zone to zone,—from the blazing shores of the heated tropics to the region of perpetual winter, from the land of the palm and vine to that of the pine and lichen,—for in twenty hours this can be accomplished, and the traveller may ascend a snow peak with the sands of the shore still upon his shoes. ”
