There are 1 book by John Maxwell O'Brien on BookOrb. A strong starting point is Aloysius the Great (2020). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has John Maxwell O'Brien written?
BookOrb lists 1 book by John Maxwell O'Brien.
Where should I start with John Maxwell O'Brien?
A good starting point is Aloysius the Great (2020).
What is the John Maxwell O'Brien books in order list?
In publication order: 1. Aloysius the Great (2020).