What is the shortest Newberry Award Book?

The shortest Newberry Award book is a bit of a tie! Two books share the title of shortest at 160 pages:

* "The Watsons Go to Birmingham - 1963" by Christopher Paul Curtis (1996)

* "The One and Only Ivan" by Katherine Applegate (2013)

While there are other Newberry Award winners with similar page counts, these two tie for the shortest.