Mark Twain,
Life on the Mississippi — Chapter 5
(1883)
“ I was in Cincinnati, and I set to work to map out a new career. I had been reading about the recent exploration of the river Amazon by an expedition sent out by our government. It was said that the expedition, owing to difficulties, had not thoroughly explored a part of the country lying about the head-waters, some four thousand miles from the mouth of the river. It was only about fifteen hundred miles from Cincinnati to New Orleans, where I could doubtless get a ship. I had thirty dollars left; I would go and complete the exploration of the Amazon. ”
