John O'Brien
John O'Brien's most popular book is Blockhead: The Life of Fibonacci with 2 saves and an average rating of 4.
Authorship percentage indicates primary author status - excluding introductions, forewards and other contributions.
Series
93 released booksAuthored 0% of series
Who Was . . . ? Series
Who Was . . . ? Series is a 93-book series with 93 released primary works first released in 2002 with contributions by Michael Burgan, Who H.Q., and Tui T. Sutherland.
