I am continually updating this list. There are a lot of wonderful series here. My goal is to review at least one book from each of these series. For the books that I have reviewed, clicking on the “my review” link will bring you to my relevant post. The most recent additions to the list appear first. Happy reading!
49. Ranger in Time by Kate Messner. 7 books, 2015-2018 and ongoing.
Amazon: Meet Ranger! He’s a time-traveling golden retriever who has a nose for trouble … and always saves the day! Ranger has been trained as a search-and-rescue dog, but can’t officially pass the test because he’s always getting distracted by squirrels during exercises. One day, he finds a mysterious first aid kit in the garden and is transported to the year 1850, where he meets a young boy named Sam Abbott. Sam’s family is migrating west on the Oregon Trail, and soon after Ranger arrives he helps the boy save his little sister. Ranger thinks his job is done, but the Oregon Trail can be dangerous, and the Abbotts need Ranger’s help more than they realize!
My take: This is one of my favorite series! Here are my reviews for all the Ranger books: Rescue on the Oregon Trail, Danger in Ancient Rome, Long Road to Freedom, Race to the South Pole, Journey Through Ash and Smoke, Escape from the Great Earthquake, and D-Day: Battle on the Beach.
48. Flashback Four by Dan Gutman, 2 books, third to be released April 3, 2018.
Amazon: In New York Times bestselling author Dan Gutman’s all-new series, which blends fascinating real history with an action-packed and hilarious adventure, four very different kids are picked by a mysterious billionaire to travel through time and photograph some of history’s most important events. This time, the four friends are headed to 1863 to catch Abraham Lincoln delivering his famous Gettysburg Address.
They’ll have to work together to ask the right questions, meet the right people, and capture the right moment. And most important—not get caught! Back matter separating fact from fiction and real black-and-white photographs throughout make Flashback Four the perfect mix of true history and uproarious fun.
(my author interview and review)
47. The Last Musketeer, by Stuart Gibbs. 3 books, 2012-2013: The Last Musketeer;
Traitor’s Chase; Double Cross.
Goodreads: On the first day of a family trip to Paris, Greg Rich’s parents disappear. They’re not just missing from the city—they’re missing from the century. So Greg does what any other fourteen-year-old would do: He travels through time to rescue them.
Greg soon finds out that his family history is tied to the legendary Three Musketeers. But when he meets them, they’re kids his age, and they’ll only live long enough to become true heroes if he can save them. To rescue his parents, Greg must assume the identity of a young Musketeer in training and unite Athos, Porthos, Aramis, and D’Artagnan—but a powerful enemy is doing everything possible to stop him from succeeding.
46. In Due Time by Nicholas O. Time. 3 books: Going, Going, Gone; Stay a Spell; and Wrong Place (Really) Wrong Time, 2016. 
Goodreads: Going, Going, Gone opens in the library at Sands Middle School where strange things are happening. Vikings burst out of bookcases, Albert Einstein appears out of nowhere, and is that Jackie Robinson tossing a baseball in the corner of the room?
When Librarian Valerie Tremt tells three students that one of the library books, The Book of Memories, is actually a time travel portal, the kids don’t believe her at first. But when they ask to see a dinosaur as proof and suddenly there is a terrifying T-Rex in the library, they realize she isn’t kidding around.
Now that he can time travel, twelve-year-old Matt knows exactly where he wants to go. In the summer of 1951, Matt’s grandfather Joe was on the path to becoming a major league baseball player. But at a 4th of July BBQ, Joe danced a little too close to the edge of a swimming pool and—splash!—he fell in and hurt his ankle. What should have been a minor injury turned out to be a career-ending one. Always the optimist, Joe used to say, “Because of the accident, I met the girl I was going to marry, so it was all worth it.”
Matt wants to go back in time to prevent the accident from ever occurring, so his grandfather can have the career he deserved! But can he successfully alter his grandfather’s past without changing his own future? Only time will tell…
(my review)
45. The Chronos Files by Rysa Walker. 3 books, 2014-2015: Timebound, Time’s Edge,
Time’s Divide.
Goodreads: When Kate Pierce-Keller’s grandmother gives her a strange blue medallion and speaks of time travel, sixteen-year-old Kate assumes the old woman is delusional. But it all becomes horrifyingly real when a murder in the past destroys the foundation of Kate’s present-day life. Suddenly, that medallion is the only thing protecting Kate from blinking out of existence.
Kate learns that the 1893 killing is part of something much more sinister, and Kate’s genetic ability to time-travel makes her the only one who can stop him. Risking everything, she travels to the Chicago World’s Fair to try to prevent the killing and the chain of events that follows.
Changing the timeline comes with a personal cost, however—if Kate succeeds, the boy she loves will have no memory of her existence. And regardless of her motives, does she have the right to manipulate the fate of the entire world? Timebound
(my review)
44. Books of Beginning by John Stephens. 3 books, 2012-2015.
Amazon: These three siblings have been in one orphanage after another for the last ten years, passed along like lost baggage.
Yet these unwanted children are more remarkable than they could possibly imagine. Ripped from their parents as babies, they are being protected from a horrible evil of devastating power, an evil they know nothing about. Until now.
Before long, Kate, Michael, and Emma are on a journey through time to dangerous and secret corners of the world…a journey of allies and enemies, of magic and mayhem. And—if an ancient prophecy is correct—what they do can change history, and it is up to them to set things right.
43. Nickolas Flux History Chronicles by Nel Yomtov. 4 books, 2014-2015.
Amazon: When a spontaneous time leap sends Nickolas Flux back to the California Gold Rush, what’s a teenage history buff to do? Join the scramble to strike it rich, of course! From meeting John Sutter to panning for gold, Nick must survive one of the most pivotal events of American Westward Expansion. Flight to Freedom-Nicholas Flux and the Underground Railroad
(my review)
publisher page
42. Baseball Card Adventures by Dan Gutman. 11 books, 1997-2015.
Amazon: Joe Stoshack lives for baseball. He knows everything there is to know about the game — except how to play well. His specialty is striking out. Stosh feels like a real loser, and when he takes a low-paying job cleaning a bunch of junk out of his neighbor’s attic, he feels even worse — until he comes across a little piece of cardboard that takes his breath away. His heart is racing. His brain is racing. He can hardly believe his eyes. Stosh has stumbled upon a T-206 Honus Wagner — the most valuable baseball card in the world! And he’s about to find out that it’s worth a lot more than money…
My take: I love Gutman and really enjoyed Honus and Me (my review). I also liked Willie and Me (my review).
author page
41. Imagination Station by Marianne Hering and Paul McCusker. 9 books, 2011-2015.
From the publisher: Climb aboard, kids! Travel back in time and sail with the Vikings, meet a Roman Emperor, come face-to-face with China’s Kublai Khan, and experience a host of other historical adventures in the Imagination Station series for young readers.
40. The Missing by Margaret Haddix. 9 books: Found (’09) (my review), Sent (’10)(my review), Sabotaged (’11) (my review), Torn (’12), Caught (’13), Sought (’13), Risked (’13), Rescued (’14), Revealed (’14) (my review), and Redeemed (’15).
Amazon: One night a plane appeared out of nowhere, the only passengers aboard: thirty-six babies. As soon as they were taken off the plane, it vanished. Now, thirteen years later, two of those children are receiving sinister messages, and they begin to investigate their past. Their quest to discover where they really came from leads them to a conspiracy that reaches from the far past to the distant future—and will take them hurtling through time. In this exciting new series, bestselling author Margaret Peterson Haddix brings an element of suspense that will keep readers on the edge of their seats.
author page
39. Infinity Ring by various authors. 8 books, 2012-2014. 
Amazon: History is broken, and three kids must travel back in time to set it right! When best friends Dak Smyth and Sera Froste stumble upon the secret of time travel — a hand-held device known as the Infinity Ring — they’re swept up in a centuries-long secret war for the fate of mankind. Recruited by the Hystorians, a secret society that dates back to Aristotle, the kids learn that history has gone disastrously off course. Now it’s up to Dak, Sera, and teenage Hystorian-in-training Riq to travel back in time to fix the Great Breaks … and to save Dak’s missing parents while they’re at it. First stop: Spain, 1492, where a sailor named Christopher Columbus is about to be thrown overboard in a deadly mutiny!
I reviewed Infinity Ring books #1, #2, #3.
author page
38. Just in Time by Cheri Earl and Carol Williams. 3 books: The Rescue Begins in Delaware (2013), Sweet Secrets in Pennsylvania (2013), and Wizard of Menlo Park, New Jersey (2014).
Goodreads: Twins George and Gracie travel back in a time machine to Delaware during the Revolutionary War, trying to rescue their stranded parents and in the process they help Caesar Rodney to cast Delaware’s crucial vote for independence.
37. The Time-Traveling Fashionista by Bianca Turetsky.
3 books: The Time-Traveling Fashionista (’11), (my review), The Time-Traveling Fashionista at the Palace of Marie Antoinette (’13), and The Time-Traveling Fashionista and Cleopatra, Queen of the Nile (’14), (my review).
Goodreads: What if a beautiful vintage dress could take you back in time? Louise Lambert has always dreamed of movie starlets and exquisite gowns and longs for the day when she can fill the closet of her normal suburban home with stylish treasures. But when she receives a mysterious invitation to a vintage fashion sale in the mail, her once painfully average life is magically transformed into a time-travel adventure.
Suddenly onboard a luxurious cruise ship a hundred years ago, Louise relishes the glamorous life of this opulent era and slips into a life of secrets, drama, and decadence… Dreamy and imaginative, The Time-Traveling Fashionista features thirty full-color fashion illustrations to show gorgeous dresses and styles throughout history.
author page
36. Sixty-Eight Rooms Adventures by Marianne Malone and Greg Call. 4 books: The Sixty-Eight Rooms (’11),(my review); Stealing Magic: A Sixty-Eight Rooms Adventure (’13); The Pirate’s Coin: A Sixty-Eight Rooms Adventure (’13)(my review); and The Secret of the Key (’14).
Goodreads: Almost everybody who has grown up in Chicago knows about the Thorne Rooms. Housed in the Children’s Galleries of the Chicago Art Institute, they are a collection of 68 exquisitely crafted miniature rooms made in the 1930s by Mrs. James Ward Thorne. Each of the 68 rooms is designed in the style of a different historic period, and every detail is perfect, from the knobs on the doors to the candles in the candlesticks. Some might even say, the rooms are magic.
Imagine—what if you discovered a key that allowed you to shrink so that you were small enough to sneak inside and explore the rooms’ secrets? What if you discovered that others had done so before you? And that someone had left something important behind?
My take: I think anyone who has ever peered into a dollhouse and imagined living inside would enjoy The Sixty-Eight Rooms. The boy-girl friendship depicted was also very nice.
author page
35. Magic Tree House by Mary Pope Osborne. 28 books, 1992-2003; and Merlin Missions, 19 books, 2009-2014. 
From the Publisher: Jack and his little sister Annie are just two regular kids from Frog Creek, Pennsylvania. Then they discover a mysterious tree house packed with all sorts of books…and their lives are never the same! Soon they are traveling through time and space in the magic tree house and having amazing adventures. Whether it’s watching baby dinosaurs hatch, finding a secret passage in a castle, helping a ghost queen in an Egyptian pyramid, or finding pirate treasure, readers won’t want to miss a single story!
My take: Who hasn’t read some Magic Treehouse books? Osborne’s got the formula down, that’s for sure. (my review)
author page
34. The Treasure Chest Series by Ann Hood. 7 books, 2012-2013.
Goodreads: While exploring The Treasure Chest, Felix and Maisie are transported to a Massachusetts farm in 1836. Disappointed that they have not landed in their beloved New York City, they wonder why they were brought to Massachusetts to meet a young girl named Clara Barton. Perhaps Clara has a message for the twins? Or maybe they have one for her? Alexander Graham Bell, Master of Sound (#7) (my review)
author page

