1.
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London : Smith, Elder, 1908 (Ballantyne, Hanson & Co.)
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2.
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New York : Lovell, Adam, Wesson & Co., [1876] (Lake Champlain Press)
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3.
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Boston : Lee and Shepard, 1869 (Stereotyped at the Boston Stereotype Foundry)
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4.
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Toronto : S.B. Gundy, c1916.
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5.
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New York : Socialistic Co-operative Pub. Assoc., [1910]
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6.
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New York : Thomas Y. Crowell Co., c1915.
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7.
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Madrid : Editorial Pueyo, 1920 (J. Pueyo)
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8.
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Paris : Calmann Lévy, 1881 (Centrale des Chemins de fer : A. Chaix et Cie)
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9.
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Paris : Alcan, 1898 (Noizette et Cie)
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10.
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New York : Henry Holt and Company, 1891.
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