Hello everyone!
I would really like to write Mr. Bradbury a letter but can't find any address to affix to the envelope. can anyone help me? thanks!

Welcome valerina!

This is the address and method to reach an author as posted on the HarperCollins (Mr. Bradbury's publisher) site:

Author Name
c/o Author Mail, 11th Floor
HarperCollins Publishers
10 East 53rd Street
New York, NY 10022