Author
Margaret Wise Brown
3 books here

A child's good night book
Picture book · ages 2–5 · 1992
Margaret Wise Brown's most repetitive and meditative bedtime book—not narrative, just incantation—genuinely effective for settling restless toddlers at dusk.

The Runaway Bunny
Board book · ages 0–3 · 2002
The gold standard of reassurance for toddlers—rhythmic, imaginative, and built entirely to soothe the fear of separation with a mother who will always come back.

Goodnight Moon
Board book · ages 0–5 · 1994
The definitive bedtime book—hypnotic repetition and Clement Hurd's illustrations have soothed generations; parents don't tire of reading it because the rhythm itself is the payload.