If there's one book that's synonymous with bedtime, it's Goodnight Moon. I was given at least three copies of it when I was pregnant. It is one of the few books that my husband and I both recall our parents reading to us when we were wee ones. He claims that it can still put him to sleep. (I keep a copy of it on our bedside table in case of emergencies).
Margaret Wise Brown and Clement Hurd created this masterpiece over 60 years ago and it has become a staple in most children's libraries. There are bright colored illustrations as well as black and white ones to hold a baby's attention. On top of the pretty artwork, the story is written in a sweet and soothing rhyme - just what baby needs at bedtime.
Goodnight noises everywhere... yawn.