The prequel to Mark Twain's Innocents Abroad was Roughing It:
Roughing It illustrates many of Twain's early adventures, including a visit to Salt Lake City, gold and silver prospecting, real-estate speculation, a journey to the Kingdom of Hawaii, and his beginnings as a writer. This memoir provides examples of Twain's rough-hewn humor, which would become a staple of his writing in such later books
In Chapter XVI of Roughing It, he claims he was almost a millionaire twice, but he sold his shares before the mines hit it rich.
The news was all over town. The former excitement was great—this one was greater still. I walked the streets serene and happy. Higbie said the foreman had been offered two hundred thousand dollars for his third of the mine. I said I would like to see myself selling for any such price. My ideas were lofty. My figure was a million. Still, I honestly believe that if I had been offered it, it would have had no other effect than to make me hold off for more.
And then he went on to say;
It reads like a wild fancy sketch, but the evidence of many witnesses, and likewise that of the official records of Esmeralda District, is easily obtainable in proof that it is a true history. I can always have it to say that I was absolutely and unquestionably worth a million dollars, once, for ten days.
Did this really happen, or is it another case of him being an unreliable narrator?