Caillou Mails a Letter Caillou : Season 1 Episode 33
TV-Y Treehouse TV 30m
Aired: January 1st, 1997 @ 6:30 PM EST on Treehouse TV
Caillou's grandma gets only junk mail in her mailbox, so Caillou decides to write a letter to her to make her feel better. When she sees the letter, she's in for a surprise.
