If your child is reading at a DRA 38 instructional level, here are some library book titles that may be appropriate:
Bunnicula by James Howe
A Dragon in the Family by Jackie French Koller
Encyclopedia Brown series by Donald Sobol
George’s Marvelous Medicine by Road Dahl
Magic School Bus series by Joanna Cole
Time Warp Trio by John Scieszka
The Twits by Road Dahl