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Subjects: 1794-1868; 1796-1873; 1805-1877; 1809-1884; 1810-1888; Botanical specimens; Braun, Alexander,; Cactaceae; Civil War, 1861-1865; Correspondence; Engelmann, George,; Gray, Asa,; History; Letters; Martius, Karl Friedrich Philipp von,; Receipts (Acknowledgments); Seeds; Torrey, John,; United States</div>
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Martius, Karl Friedrich Philipp von,</div>
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