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One Came Home (edition 2013)
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Wikipedia in English
Amazon.com Product Description (ISBN 0375869255, Hardcover)In the town of Placid, Wisconsin, in 1871, Georgie Burkhardt is known for two things: her uncanny aim with a rifle and her habit of speaking her mind plainly.
But when Georgie blurts out something she shouldn't, her older sister Agatha flees, running off with a pack of "pigeoners" trailing the passenger pigeon migration. And when the sheriff returns to town with an unidentifiable body—wearing Agatha's blue-green ball gown—everyone assumes the worst. Except Georgie. Refusing to believe the facts that are laid down (and coffined) before her, Georgie sets out on a journey to find her sister. She will track every last clue and shred of evidence to bring Agatha home. Yet even with resolute determination and her trusty Springfield single-shot, Georgie is not prepared for what she faces on the western frontier.
(retrieved from Amazon Mon, 30 Sep 2013 13:27:14 -0400)
In 1871 Wisconsin, thirteen-year-old Georgia sets out to find her sister Agatha, presumed dead when remains are found wearing the dress she was last seen in, and before the end of the year gains fame as a sharpshooter and foiler of counterfeiters.
(summary from another edition)