There are 1 book by Sarah Reaser O'Brien on BookOrb. A strong starting point is Backyard Bash (2022). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has Sarah Reaser O'Brien written?
BookOrb lists 1 book by Sarah Reaser O'Brien.
Where should I start with Sarah Reaser O'Brien?
A good starting point is Backyard Bash (2022).
What is the Sarah Reaser O'Brien books in order list?
In publication order: 1. Backyard Bash (2022).