Linus van Pelt, my favourite of Schulz’s characters, comes of age in the third Complete Peanuts volume, emerging almost fully formed by the end of 1956, unlike Charlie Brown, who is more unsympathetic than you’d imagine. Earlier, non-chronological compilations skipped over much of the strip’s earliest years (much of the material in the first two volumes was unfamiliar and had not previously been reprinted).
I admire the cohesiveness of Seth’s design (he was the artist for Aimee Mann’s Lost In Space sleeve), a reverence that would not have been possible without such a commitment to completeness (Fantagraphics plans a 25-volume set to cover the strip’s entirety).