Five out-of-text resources
- http://www.kidsreads.com/authors/au-carman-patrick.asp ( information about the author and the books written by different authors)
- http://www.patrickcarman.com/ ( It is the authors’ web site that gives more about all his works and a detailed biography)
- http://www2.scholastic.com/browse/contributor.jsp?id=2823 ( This book is published by Scholastic Inc., site gives the publishers impressions and views about the author and the books)
- http://www.the39clues.com/ ( a website exclusively dedicated for the books in 39 Clue series gives a lot of information about the different books of this series.)
- http://youtu.be/Ke4SsXqHU10 ( A very interesting YouTube video about the book and the author).
