Here's an example where Billy asks the help of Robert Shapiro (one of OJ's lawyers)
Spoiler!
In the book Billy also asks robot manufacturers to build him a robot to protect his tree house from his annoying sister.
It's not really a little boy writing the letters though, but a writer just pretending to be a little boy. It's great fun nonetheless. You can read some other funny letters here.
Or you could just buy the book. It's also a fun present to give (I know, as I have experience in being the recipient)


