Robert C. O'Brien
Robert C. O'Brien's most popular book is Mrs. Frisby and the Rats of NIMH with 259 saves and an average rating of 4.05.
Authorship percentage indicates primary author status - excluding introductions, forewards and other contributions.
Series
2 primary booksAuthored 50% of series
Rats of NIMH
Rats of NIMH is a 2-book series with 2 released primary works first released in 1971 with contributions by Robert C. O'Brien, Jane Leslie Conly, and Leonard Lubin.
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