10 best-selling book series

10. The Railway Series

fot. AmosWolfe / wikipedia.org (CC BY-SA 2.5)

• sale: 200,000,000
• author: Rev. W. Awdry, Christopher Awdry
• year of series start: 1945
• genre: children’s literature
• number of volumes: 42
• original language: English

9. Nancy Drew

• sale: 200,000,000
• author: Various authors as Carolyn Keene
• year of series start: 1930
• genre: crime stories
• number of volumes: 175
• original language: English

8. Noddy

• sale: 200,000,000
• author: Enid Blyton
• year of series start: 1949
• genre: children’s literature
• number of volumes: 24
• original language: English

7. Sweet Valley High

• sale: 250,000,000
• author: Francine Pascal and ghostwriters
• year of series start: 1983
• genre: literature for children and teenagers
• number of volumes: 400
• original language: English

6. Diary of a Wimpy Kid

• sale: 250,000,000
• author: Jeff Kinney
• year of series start: 2007
• genre: literature for young people
• number of volumes: 21
• original language: English

5. Choose Your Own Adventure

• sale: 250,000,000
• author: Various authors
• year of series start: 1979
• genre: children’s literature
• number of volumes: 184
• original language: English

4. Berenstain Bears

• sale: 260,000,000
• author: Stan i Jan Berenstain
• year of series start: 1962
• genre: children’s literature
• number of volumes: over 300
• original language: English

3. Perry Mason bibliography

• sale: 300,000,000
• author: Erle Stanley Gardner
• year of series start: 1933
• genre: novels and short stories
• number of volumes: 86
• original language: English

2. Goosebumps

• sale: 400,000,000
• author: R. L. Stine
• year of series start: 1992
• genre: Horror, thriller, children’s literature
• number of volumes: 235
• original language: English

1. Harry Potter

• sale: 500,000,000
• author: J. K. Rowling
• year of series start: 1997
• genre: fantasy, adventure, youth
• number of volumes: 7
• original language: English