There are 1 book by Catherine E. O'Brien on BookOrb. A strong starting point is Horse Economics (2005). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has Catherine E. O'Brien written?
BookOrb lists 1 book by Catherine E. O'Brien.
Where should I start with Catherine E. O'Brien?
A good starting point is Horse Economics (2005).
What is the Catherine E. O'Brien books in order list?
In publication order: 1. Horse Economics (2005).