The library was one of the first trips I ever made with The Boy, too. That trip was much more eventful.
I carried The Boy in a sling and while I perused the new arrivals, he grunted and cooed in his sleep. An old lady in the aisle cast curious looks in my direction. The Boy's coos turned into cries. The lady's looks turned cranky. I opened the sling to shush The Boy.
"OH! It's a baby!" cranky lady said. "I thought it was a cat."
Still the weirdest thing anyone's ever said about my kid.