John O'Brien
John O'Brien has written at least 20 books. Their most popular book is Who Was Marco Polo? with 2 saves with an average rating of 4⭐.
Authorship percentage indicates primary author status - excluding introductions, forewards and other contributions.
Series
8 primary booksAuthored 38% of series
A Shrouded World
A Shrouded World is a 8-book series with 8 released primary works first released in 2014 with contributions by Mark Tufo, John O'Brien, and John O'Brien.
Series
89 released booksAuthored 0% of series
Who Was . . . ? Series
Who Was . . . ? Series is a 89-book series with 89 released primary works first released in 2002 with contributions by Kate Boehm Jerome, Jess Brallier, and Who Hq.
Series
12 released booksAuthored 0% of series
Where is/are...?
Where is/are...? is a 12-book series with 12 released primary works first released in 2015 with contributions by Patricia Demuth, Megan Stine, and Who Hq.
