Kathi Appelt's most popular book is The Underneath with 19 saves and an average rating of 3.13.
Series
20 released booksAuthored 0% of series
Smart Pop is a 20-book series with 20 released primary works first released in 2003 with contributions by Jennifer Crusie, H. G. Wells, and Robert J. Sawyer.
Series
16 primary books40 released booksAuthored 0% of series
Camp Half-Blood Chronicles is a 40-book series with 33 released primary works first released in 1467 with contributions by Rick Riordan, Nick Chamian, and Mark Oshiro. 1 book is still to be released. The next book is scheduled for release on .