•  Afrikaans
 •  Amharic
 ✓  Arabic (2)
 •  Catalan
 ✓  Chinese (Simplified) (3)
 ✓  Chinese (Traditional) (2)
 ✓  Croatian (3)
 ✓  Danish (4)
 ✓  Dari (1)
 ✓  Dutch (2)
 ✓  English (58)
 •  Filipino / Tagalog
 ✓  Finnish (1)
 ✓  French (7)
 ✓  German (6)
 •  Greek
 •  Gujarati
 •  Hebrew
 ✓  Hindi (5)
 ✓  Hungarian (4)
 •  Indonesian
 ✓  Italian (7)
 •  Japanese
 ✓  Kannada (2)
 •  Khmer
 •  Kinyarwanda
 •  Korean
 •  Latin
 •  Macedonian
 ✓  Malay (4)
 ✓  Malay (Jawi) (3)

 •  Maltese
 ✓  Maori (1)
 ✓  Marathi (2)
 ✓  Mongolian (23)
 ✓  Niuean (1)
 ✓  Norwegian (1)
 ✓  Pashto (1)
 ✓  Persian / Farsi (42)
 •  Polish
 ✓  Portuguese (6)
 •  Quechua
 •  Rarotongan / Cook Island Maori
 ✓  Romanian (2)
 ✓  Russian (4)
 ✓  Samoan (1)
 ✓  Serbian (5)
 •  Shona
 •  Sinhalese
 ✓  Slovak (1)
 ✓  Slovenian (1)
 ✓  Spanish (20)
 ✓  Swahili (1)
 ✓  Swedish (2)
 ✓  Tamil (1)
 ✓  Telugu (6)
 •  Tongan
 ✓  Turkish (1)
 ✓  Urdu (1)
 ✓  Vietnamese (1)
 ✓  Yiddish (1)

 ✓  Red Covers (3)
 ✓  Orange Covers (7)
 ✓  Yellow Covers (14)
 ✓  Green Covers (200)
 ✓  Blue Covers (27)
 ✓  Purple Covers (3)

 ✓  Pink Covers (4)
 ✓  Black Covers (7)
 ✓  White Covers (11)
 •  Gray Covers
 ✓  Brown Covers (11)
 ✓  Rainbow Covers (5)

 ✓  Africa (3)
 ✓  Europe (3)
 ✓  Asia and Middle East (3)
 ✓  Oceania / Australia (5)
 ✓  North America and Central America (6)
 ✓  South America (3)

 •  Oceans
 ✓  Imaginary Places (2)
 ✓  School (6)
 •  Buildings
 •  Space
 ✓  Underwater (1)

 ✓  1501-1900 (2)
 ✓  1901+ (1)