What page in dear mr henshaw does it say when leigh writes a book what will he probably call it?

The passage where Leigh discusses a potential book title is on page 128 of "Dear Mr. Henshaw." Here's what he writes:

"I've been thinking about a title for the book I'm going to write. Maybe I'll call it *A Boy, a Dog, and a Time Machine*."

Let me know if you have any other questions about "Dear Mr. Henshaw!"