On November 18, 1985, the first Calvin and Hobbes strip ran in a couple dozen newspapers (that number would grow to 2,400):
If you've never taken the time to read through the 10-year C&H archive, you're really missing out. It's like being transported to the magic world of a six-year-old's imagination where everything is simple, colorful, lighthearted, and above all a grand adventure.
I am about the same age as the comic strip, so we grew up together. I have only grown to appreciate the comic more and more as I've gotten older.
Here's the last one ever published. Still hits me in the feels:
I definitely recommend book form, but you can view them all digitally right here: