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In 1827, Switzerland's Rudolphe Töpffer created a comic strip and continued on to publish seven graphic novels.
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In 1837, "The Adventures of Obadiah Oldbuck" was published by Rudolphe Töpffer and it is considered the earliest known comic book.
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In 1842, "The Adventures of Obadiah Oldbuck" became the first comic book published in the United States.