172. The Mountain of Adventure by Enid Blyton

 The four children, their parrot Kiki, mother/aunt and "Old Bill" plan a quiet holiday in North Wales. However, as usual, adventure finds the children when they go off riding donkeys on a camping trip. First published in 1949 this story does not meet today's standards of political correctness particularly in Blyton's handling of black and Japanese characters.

169. The Castle of Adventure by Enid Blyton

Jack, Phillip, Dinah and Lucy-Ann befriend a feral "gypsy" girl named Tassie who joins in their adventures when exploring an abandoned castle with a mysterious past. Secret passages, hidden rooms and suits of armour all figure in the plan to capture the criminals and recover of the treasure.

168. The Sea of Adventure by Enid Blyton

The children are off of school so that the can recover from the measles. When their mother falls ill, their old friend Bill agrees to take them to a remote island in Scotland. He is hiding out from a band of rogues that caught on to his trailing them. As always, it becomes an adventure featuring their parrot Kiki, rats, puffins and "the enemy".

166. The Valley of Adventure by Enid Blyton

 After stowing away on the wrong airplane, the children find themselves in a remote valley hiding from treasure hunters. Using their wits and survival skills, the four kids and their amusing parrot Kiki help capture the rogues and save an elderly couple who have been guarding the treasure for years.

164. The Last Olympian by Rick Riordan

In the final battle between the Olympians and the Titan Kronos, Percy and the demigods get help from surprising sources.

163. Fun for the Secret Seven by Enid Blyton

The children befriend an elderly man who desparately needs help paying the vet bill and caring for his lame horse. The Secret Seven save the day by raising funds which inspires the grown ups to help too.

159. Guinea Pigs Far and Near by Kate Duke

Charming illustrations help to teach opposites, relational words and adverbs.

158. The Composer is Dead by Lemony Snicket

In typical Snicket fashion, this book presents the instruments of the orchestra in a way that's fun and easy to remember. Paired with Nathaniel Stookey's music, on CD with the book, a great teaching tool.

154. The Demigod Diaries by Rick Riordan

An anthology of short stories, puzzles and illustrations based on Riordan's Percy Jackson and the Olympians series. Includes the aptly titled "Son of Magic" penned by Riordan's 16 year old son Haley who was the inspiration behind this popular series.

152. The Sea of Monsters by Rick Riordan

In this second book of the series, Percy and Annabeth must travel through the Sea of Monsters to rescue Grover from the cyclops Polyphemus. Their ultimate goal is to steal the Golden Fleece from Polyphemus and bring it back to Camp Half-Blood so that it's healing powers can stop the destruction of the camp.

151. The Lightning Thief by Rick Riordan

This first book in "The Olympians" series is based on the premise that Greek gods are truly imortal. Set in today's world it is Greek Mythology retold with an ironic twist. Interesting characters and exiting battle scenes make the story come to life.

148. The Adventurous Four: Stranded! by Enid Blyton

Siblings Pippa, Zoe and Tom visit their friend Andy who takes them to see the Cliff of Birds on his fishing boat. They inadvertently discover that the island is being used by smugglers and get taken hostage. Quick thinking helps them turn the tables and escape.

146. Five go to Billycock Hill by Enid Blyton

The Famous Five camp out on Billycock Hill near their friend Toby's farm. They meet up with some interesting characters including moth and butterfly enthusiasts Mr Gringle and Mr Brent, and Toby's little brother Benny who's always chasing after his pet pigling Curly. When two experimental planes go missing from the nearby airfield, the Five help solve the crime and find Toby's cousin Flight-Lieutenant Jeff Thomas who had been accused in the theft.

144. Five Go Adventuring Again by Enid Blyton

The three cousins are back at Kirrin Cottage for Christmas Holidays with George and her dog Timmy. A tutor, Mr Roland, has been hired to help the boys catch up on their studies. Uncle Quentin's very important research notes go missing and the Famous Five solve the mystery and save the day.

143. Five on a Treasure Island by Enid Blyton

In this first book of the Famous Five series, first published in 1942, siblings Julian, Dick and Anne meet their cousin Georgina, who wishes to be called George, for the first time. George is unfriendly at first but the children win her over and she willingly shares her island with its derelict castle and submerged shipwreck. During a storm, the ship gets washed up on the beach and the search for a long lost horde of gold bars begins. George's dog Tim becomes the fifth member of the group.

138. Secret Seven Win Through by Enid Blyton

It's the Easter Holidays and the Secret Seven find that their clubhouse is out of bounds so they seek out a new place to meet. Deciding to use a well hidden cave, they stash their treats, pillows and books. Things mysteriously start to go missing and the Secret Seven help the police by uncovering the intruder.

135. The Secret of the Wooden Lady by Carolyn Keene

Girl detective, Nancy Drew, and her friends are enlisted by Captain Easterly when strange things start happening on his clipper ship the Bonny Scott. Through research and following clues, Nancy finds the treasure and the thugs get their just desserts.

134. The Secret of the Lost Empire by Elwy Yost

Jon Skye and his uncle Howard venture into the uncharted jungles of the Amazon with the mysterious Mr Plumm in search of the legendary Falls of Orellana, alegedly the highest in the world. The plot is filled with many twists, turns and unexpected results.

133.The Tower Treasure by Franklin W. Dixon

This first book in the original Hardy Boys series was written in 1927 and then underwent significant plot changes, made by Harriet S. Adams, in 1959 and was republished. Brothers Frank and Joe Hardy solve their first crime, and recover stolen jewels and bonds, with some help from their father professional detective Fenton Hardy.

132. Billy Bunter's Tramp by Frank Richards

The title is a play on words - while out for a tramp (hike) Billy Bunter and the Famous Five of the Remove encounter a tramp(hobo)named Ragged Dick. The story takes many twists and turns surrounding the true identity of the tramp which is not revealed until the very end.