For the love of Gelo!
O'Donnell, Tom.
New York, New York : Razorbill, [2014]

Hamster-saurus Rex
O'Donnell, Tom, author.
New York, NY : Harper, an imprint of HarperCollinsPublishers, [2016]

Hamstersaurus rex
O'Donnell, Tom.
2016.

Hamster-saurus Rex
O'Donnell, Tom, author.
New York, NY : Harper, an imprint of HarperCollinsPublishers, [2016]

Hamstersaurus Rex vs. Squirrel Kong
O'Donnell, Tom, author.
New York, NY : Harper, an imprint of HarperCollinsPublishers, [2017]

Hamstersaurus Rex gets crushed
O'Donnell, Tom.
New York : HarperCollins, 2018.

Hamstersaurus Rex vs. the cute-pocalypse
O'Donnell, Tom, author.
New York, NY : Harper, an imprint of HarperCollinsPublishers, [2018]

Hamstersaurus Rex gets crushed
O'Donnell, Tom.
New York : HarperCollins, 2018.

Hamstersaurus rex gets crushed
O'Donnell, Tom.
2018.

Hamstersaurus Rex vs. Squirrel Kong
O'Donnell, Tom, author.
New York, NY : Harper, an imprint of HarperCollinsPublishers, [2017]

Hamstersaurus rex vs. squirrel kong
O'Donnell, Tom.
2017.

Hamstersaurus Rex vs. the cute-pocalypse
O'Donnell, Tom, author.
New York, NY : Harper, an imprint of HarperCollinsPublishers, [2018]

Hamstersaurus rex vs. the cutepocalypse
O'Donnell, Tom.
2018.

Heroes level up
O'Donnell, Tom, author.
New York, NY : Balzer + Bray, an imprint of HarperCollinsPublishers, [2020]

Heroes level up
O'Donnell, Tom, author.
[United States] : Balzer + Bray, 2020.

Homerooms & hall passes
O'Donnell, Tom, author.
New York, NY : Balzer+Bray, an imprint of HarperCollinsPublishers, [2019]

Homerooms and hall passes
O'Donnell, Tom.
2019.

Homerooms and hall passes
O'Donnell, Tom, author.
[United States] : Balzer + Bray, 2019.

Homerooms and hall passes Heroes level up.
O'Donnell, Tom.
2020.

Heroes level up
O'Donnell, Tom, author.
New York, NY : Balzer + Bray, an imprint of HarperCollinsPublishers, [2020]

Space rocks!
O'Donnell, Tom.
New York, New York : Razorbill, an imprint of Penguin Group (USA), [2014]

For the love of Gelo!
O'Donnell, Tom.
New York, New York : Razorbill, [2014]