There are 1 book by Michael J. O'Brien on BookOrb. A strong starting point is Mississippian Community Organization (2013). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has Michael J. O'Brien written?
BookOrb lists 1 book by Michael J. O'Brien.
Where should I start with Michael J. O'Brien?
A good starting point is Mississippian Community Organization (2013).
What is the Michael J. O'Brien books in order list?
In publication order: 1. Mississippian Community Organization (2013).