| The World's Greatest Artists (5 titles) |
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| The World's Greatest Athletes (17 titles) |
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| The World's Greatest Athletes (19 titles) |
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| Titanic Stories (5 titles) |
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| Today's MVPs and Champions (6 titles) |
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| Today's MVPs and Champions (8 titles) |
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| Top 10 in Sports (12 titles) |
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| True Animal Stories (6 titles) |
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| True Stories, Real People (6 titles) |
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| Understanding the Basics (8 titles) |
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| United States Landmarks (6 titles) |
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| Unsolved Mysteries (8 titles) |
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| Unsolved Mysteries (7 titles) |
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| U.S.A. Travel Guides (52 titles) |
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| Visitor Guides (5 titles) |
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| Visitor Guides (6 titles) |
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| Wars In U.S. History (8 titles) |
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| Weird-but-True Facts (10 titles) |
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| Weird-but-True Facts (8 titles) |
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| Weird-But-True Facts (12 titles) |
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| Weird Sports (6 titles) |
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| Women's Professional Basketball (6 titles) |
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| Wonders of Space (5 titles) |
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