| Ultimate Sports Road Trips (8 titles) |
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| Understanding World Religions and Beliefs (8 titles) |
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| United States President Biographies (8 titles⁎) |
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| United States Presidents (CB) (46 titles) |
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| US Armed Forces (6 titles) |
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| US Military Encyclopedias (4 titles) |
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| US Symbols (6 titles) |
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| Versus (6 titles) |
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| Weird World (6 titles) |
New! Spring 2026 |
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| Women in Science (6 titles) |
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| Women in Sports (6 titles) |
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| World Explorers (6 titles) |
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| World Festivals (6 titles) |
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| World Religions (6 titles) |
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| World War I (6 titles) |
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| World War II (6 titles) |
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| World Wonders (6 titles) |
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| Xtreme Cars (6 titles) |
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| Xtreme Horror Lab (6 titles) |
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| Xtreme Moments in Sports (6 titles) |
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