Immortalised symbol of Christmas

Do you know what this picture represents?

Yes, I do mean this picture, and I assure you it is not just some tree with a single ornament weighing it down. Little may you know that this is a famous Christmas symbol! Can you guess?

Clue: It is from a notable cartoon...

...and comic book series.

CHARLIE BROWN!

Yes, it's the all time favourite Charlie Brown and the Peanuts gang! I don't consider fans of these adorable child characters to be old school. In fact, they tug you back into that "lala" land of childhood, bringing back the moments of bliss with the purest of friendship...and everythng seems perfect despite the imperfections...and optimisim even though one would lose every baseball game.

“If I stand here, I can see the Little Red Haired girl when she comes out of her house... Of course, if she sees me peeking around this tree, she'll think I'm the dumbest person in the world... But if I don't peek around the tree, I'll never see her... Which means I probably AM the dumbest person in the world... which explains why I'm standing in a batch of poison oak."~Charlie Brown