An Iowa solution to the mound builder mystery -- Discovery of the slate tablets -- Who wrote the tablets? -- The limestone tablet and elephant pipes -- The storm breaks -- Circumstances of discovery -- The trials of Jacob Gass -- Tiffany's ordeal -- The public expulsion of Tiffany -- Suppression of Lindley's evidence -- Secret inquiries and legal threats -- The opposition ticket -- Evidence of the frauds -- How a judge contributed to legend -- The judge in the first person -- The clergyman emerges from the shadows -- The extent of conspiracy -- Again the wandering nations -- Appendix : the Davenport pipes.
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