Ignatius L. Donnelly

American politician, writer, and reformer (1831–1901); served in Minnesota state government and the U.S. House of Representatives and is best known for popularizing theories about Atlantis and other speculative historical ideas.

This list of books are ONLY the books that have been ranked on the lists that are aggregated on this site. This is not a comprehensive list of all books by this author.

  1. 1. Ragnarok

    The Age of Fire and Gravel

    A 19th-century polemic combining geology, mythology and speculation to argue that a catastrophic cometary encounter once struck Earth, producing widespread fires, floods and masses of gravel and erratic boulders that reshaped climates and landscapes and wiped out advanced prehistoric civilizations; the work marshals contemporary geological observations and parallels among flood- and fire-myths to support a single devastating global upheaval as the source of many mysterious deposits and lost cultural memories.

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  2. 2. Atlantis

    The Antediluvian World

    A polemical 19th-century work that argues for the existence of an advanced prehistoric civilization in the Atlantic whose destruction by a cataclysmic flood scattered survivors who became the founders of later cultures; the author assembles comparative mythology, linguistics, archaeology, and geologic speculation to trace common symbols, flood legends, and technological parallels among Egypt, Mesopotamia, Greece, and the Americas, claiming these point to a single antediluvian source of civilization—an interpretation that popularized the Atlantis hypothesis but rests on speculative methods and conclusions widely challenged by later scholarship.

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