Welcome! Kathie McMahon is a children's lit author who writes engaging books for kids age 6-12. Current chapter book series, Mortimer and Me, focuses on 8-year-old Jimmy Robertson and his friend Mortimer, a friendly moose who wanders into Jimmy's town of Peabody, Wisconsin.

Books and Stories

Winner -

Royal Dragonfly Award


Mortimer and Me

A boy and a moose . . .

What could possibly go wrong?


Eight-year-old Jimmy is the new kid in school and he’s already been labeled as a troublemaker. After his first attempt to make a friend has disastrous results, the only one who seems to care about him is Mortimer – a big ole clumsy moose that wanders into town causing problems of his own. Jimmy and Mortimer face one setback after another, including a run-in with a couple of bullies and an escape by the class pet. The soccer game between the teachers and the third graders might be the opportunity Jimmy is searching for. Can he and Mortimer finally prove to everyone that they belong?

If it is to be, it’s up to me!


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A Chapter Book for ages 6-9
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Gilbert Sun News Features

Click here to read article on pg.19
Click here to read article on pg.14
Pockets Magazine
August 2019
"Gator Boy vs. the Bully"
To read story, click here.
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Mortimer and Me: The Bigfoot Mystery
What's this mean?
Read all about it here.

It all started with a huge footprint . . .

Eight-year-old Jimmy and his moose friend Mortimer join the rest of the Trailblazers on a camping trip to earn their Outdoor Adventure badge. What starts out as a team building exercise soon turns into an investigation of a mysterious footprint that can’t be described as animal or human. What kind of creature made it and where did it go? One discovery leads to another, until no one knows what to believe anymore. But one thing is for sure . . . they are not alone.

Take only memories, leave only footprints.


You can download an ARC and write a review by clicking here.


Mortimer and Me:

Moose For Hire

Friends come in all shapes and sizes . . .

Another adventure with eight-year-old Jimmy and his moose friend Mortimer leads them on a mission. When Grandpa's childhood friend, Charlie, falls after helping Jimmy and his dad build a treehouse, Jimmy feels responsible. To make matters worse, Jimmy overhears his parents express concern for Charlie's medical bills. Determined to help, Jimmy and Mortimer set out to find a summer job. Despite failing at mowing lawns, delivering groceries, spinning signs, and walking dogs, Jimmy finally comes up with the perfect plan. That is, until a catastrophe threatens to destroy everything.

A Chapter Book for ages 6-9
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Believe in yourself and you're halfway there!

Purple Dragonfly Winner Seal Trans.png

A Moose is on the Loose!


Jimmy begins fourth grade with the rest of his Trailblazer buddies. Enter Mr. Delgado, the coolest teacher ever. Jimmy and classmate Chelsey team up for the school's science fair with one goal: Win first prize with an experiment no one's ever done before. However, Kevin and Bradley have other ideas. When the experiment goes terribly wrong, the Trailblazers set out on a rescue mission like no other!

Together we achieve the Extraordinary!

A Chapter Book for ages 6-10
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 B.R.A.G. Medallion Honoree!
Read More Here.

School Visits: Now scheduling in-person and virtual visits for the 2022-2023 school year. Contact me to set a date!

Book Festivals:

July 23, 2022, 9am-2:30pm: Payson Book Festival, Mazatzal Hotel and Casino, Payson, AZ

Book Signings:

July 30, 2022, 1:00-5:00pm: Barnes & Noble-Dana Park, Mesa, AZ

Special Online Events:

I now have a YouTube channel! Look for me under Kathie McMahon, Children's Author. My first video features one of the experiments done by Jimmy and Chelsey in the book, Moose In Space. I just added a chat with illustrator Tom Tate, as well as Rocket Science with the family on the 4th of July. Check them out here!



"Fourth grade can be quite a challenge. For Jimmy and his moose friend Mortimer, the fourth grade can also be a spooky adventure. In The House On Briarwood Lane, Author Kathie McMahon brings together a sprinkle of friendship with a dose of mystery, to include science experiments and a fun classroom style. An easy read for young chapter book readers."

~ Lorraine Hawley

Author, Curious World of Dandy-Lion

"In Jimmy and Mortimer's next adventure, mysterious footprints spark the Trailblazers' curiosity on their camping trip. But are the "Bigfoot" footprints for real, or is Bigfoot just a ghost story? Either way, Jimmy is determined to find out. As he investigates, he learns the value of teamwork, friendship, and forgiveness. A fun mystery for early elementary grades."

Karen S. Chow, Author,

Miracle (coming Spring 2022)

"Filled with laughter and adventure, the reader is pulled into Jimmy’s orbit as he and his pals navigate the 4th grade science fair! Rocketry, teamwork, perseverance, problem-solving and resilience set the scene and you can't help but cheer for the kids in Mr. Delgado's 4th grade class. Moose In Space is a must read for every  classroom!"

Colleen Howard, STEM Specialist

Mesa Public Schools -

Mesa, AZ

Read more reviews here.
Arizona children's lit author | Kathiemcmahon
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