Goodnight Lulu by Paulette Bogan - A chicken cannot fall asleep for fear of all the things that may happen to her while asleep.
The Napping House by Audrey Wood - An entire household falls asleep on the same bed one at a time.
Goodnight, Goodnight by Eve Rice - Say goodnight to the entire city.
The Day the Babies Crawled Away by Peggy Rathmann - A whole group of babies run away and explore. Told in all sillouette illustrations.