There are 1 book by Marsha J. O'Brien on BookOrb. A strong starting point is Once She Was Young (2006). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has Marsha J. O'Brien written?
BookOrb lists 1 book by Marsha J. O'Brien.
Where should I start with Marsha J. O'Brien?
A good starting point is Once She Was Young (2006).
What is the Marsha J. O'Brien books in order list?
In publication order: 1. Once She Was Young (2006).