July 30, 1987 brings an annoyed reaction from Calvin when he falls sick during his summer vacation, proving that sick days belong exclusively to the school year.
Bill Watterson transformed a rejected college cartoon character named Mort into Calvin’s mustachioed, cigar-smoking fantasy alter ego, Spaceman Spiff, who made his debut on November 29, 1985. Whenever routine tasks or unpleasant situations overwhelmed Calvin, the Spiff persona offered a reliable escape route into gross alien worlds, complete with distinctive threats like "eat hot electric death."
- Spaceman Spiff evolved from Watterson’s pre-syndicate comic characters into Calvin’s go-to defense against boring classes and routine checkups.
- The strip's visual style drew heavy inspiration from George Herriman's Golden Age newspaper comic Krazy Kat, reflecting similar arid environments in its Sunday color installments.
- Bill Watterson personally selected thirty-six Sunday pages for the retrospective volume Calvin and Hobbes: Sunday Pages 1985-1995, published in conjunction with an exhibition at The Ohio State University Cartoon Research Library.
Before launching his defining creation, Watterson pitched strips featuring early prototypes in a project titled The Doghouse, where protagonists eventually morphed into Calvin after an original syndicate suggestion. Universal Press Syndicate ultimately picked up the updated strip after United Feature Syndicate passed, giving the cartoonist room to experiment beyond mundane earthly settings.
October 18, 1987 captures Mrs. Wormwood interrogating Calvin as he transforms a standard history question into an interrogation by the Hideous Zorgs of Planet X-13. Mrs. Wormwood catches numerous strays in these interstellar daydreams while dealing with a student who operates as a persistent chaos agent.
May 23, 1990 features a week-long storyline where Calvin takes his alter ego far enough to stage an armed elementary school breakout using a rubber band. After being called to the board for a math problem, he shoots his way out and runs all the way home before his mother intercepts him.
September 26, 1993 highlights the direct artistic lineage connecting Watterson’s work to George Herriman’s Krazy Kat, which ran from 1913 to 1944. Fantagraphics continues to keep Herriman’s hardcover collections in print for historians and contemporary cartoonists.
April 30, 1995 delivers a nearly wordless sequence from Calvin’s perspective as he pilots a flying saucer through a boring classroom hour before Mrs. Wormwood interrupts his train of thought. Calvin immediately pivots to stalking prey as a dinosaur once supervision lapses.
Exhibiting original Sunday pages required careful handling of sketch lines, corrections, and registration marks to preserve the intentional use of color. Lucy Shelton Caswell, Professor and Curator at The Ohio State University Cartoon Research Library, reflected on the historical weight of the collection in June 2001.
“On behalf of all who enjoyed Calvin and Hobbes, thank you, Bill Watterson., said Lucy Shelton Caswell, Professor and Curator The Ohio State University Cartoon Research Library.”
