There are 2 books by John K. O'Brien on BookOrb. A strong starting point is Visions 2100 (2015). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Showing 1 of 2 titles.
Frequently asked questions
How many books has John K. O'Brien written?
BookOrb lists 2 books by John K. O'Brien.
Where should I start with John K. O'Brien?
A good starting point is Visions 2100 (2015).
What is the John K. O'Brien books in order list?
In publication order: 1. Visions 2100 (2015).