Harry Potter and the Cursed Child, Parts One and Two is written by J.K. RowlingJ.K. Rowling wrote The SilkwormThe Silkworm is written by J.K. Rowling
[Human]: I like Harry Potter and the Cursed Child, Parts One and Two. Who wrote the book? [Assistant]: It was written by J.K. Rowling, Jack Thorne, and John Tiffany. [Human]: Is there any other books besides Harry Potter that J.K. Rowling wrote? 
Definitely, JK Rowling wrote The Lorax, which was released in 1971. Would you like to read it?