One from March 1953. This 1953-54 period seems like a rich one for my feature. I suppose Schulz didn't quite have the right modulation down yet for the tone of the strip.
Good Lord, look at Charlie Brown's expression in the second panel. Man, he's taking it hard. And the final panel. That's not just the sound of losing a marble. That's the sound of every date for which he'll ever be turned down, every promotion he'll ever be passed over for, every disappointment reverberating through his entire life. No wonder he can't sleep.