November 7, 1954: Linus Van Pelt: Master of Card Houses and the Slow Burn

Read this strip at gocomics.com.

Lucy is such a caring and supportive sister. Her laughter consists of the serif'd letters of malice.

I love how Linus carefully puts all the cards back in the pack before throwing it at Lucy.

September 24, 1952: Linus' third strip

Schroeder has been redefined as the strip musician, so Linus plays the role of stereotypical baby for a while, the third such character to fill that role in less than two years.

July 19, 1952: Dog speech addendum: Heh, heh, heh

Snoopy can also laugh derisively!

A very cute strip involving the dog. His ears, particularly, are adorable here. They're like little wings.

November 10, 1950: Snoopy's puppet head

1. Notice Snoopy's snout in the first panel is a little thicker than usual, which helps to make him look a little more like the modern Snoopy.

2. In the last panel, we see him doubled-up.  Snoopy is such a visually-strong character even in those days.  His mouth, opened at a puppety angle like that, is major-league cute.