This large-format treasury collects every strip from Yukon Ho! and Weirdos from Another Planet!, with full-color Sundays and the debut of Calvin's infamous duplicator--a must-have for readers who love mischief, imagination, and tiger-powered mayhem. What happens when bath time becomes a Yukon expedition--or school avoidance turns into interplanetary travel? The Authoritative Calvin and Hobbes is a must-have treasury for fans of Bill Watterson's legendary comic strip. This large-format volume collects every strip from Yukon Ho! and Weirdos from Another Planet! (spanning May 24, 1987 to December 4, 1988), including both black-and-white dailies and full-color Sundays. It also features a full-color story unique to this collection. Watterson captures the adventures of Calvin--a spirited six-year-old with a wild imagination--and Hobbes, his dry-witted, fiercely loyal tiger who springs to life when no one else is watching. Whether they're building a snowman army, debating the meaning of life, or inventing a duplicator that creates existential chaos, Calvin and Hobbes turn everyday moments into unforgettable adventures. Features include: Every strip from Yukon Ho! and Weirdos from Another Planet! Full-color Sunday strips and black-and-white dailies Exclusive full-color story unique to this edition Fan-favorite inventions like the duplicator and transmogrifier Strips spanning May 1987 to December 1988 Perfect for longtime readers and newcomers alike, this collection delivers the wit, heart, and imagination that made Calvin and Hobbes a cultural icon.