http://www.islandportpress.com/dahlov/littlefisherman.html that it was originally published in 1945. We discussed the illustrations along the way.
The next one they chose was this:
10 Turkeys in the Road by Brenda Reeves Sturgis. A Maine author and my friend. It's illustrated by David Slonim. The kids were quick to find the hidden numbers on each page and to tell me the next number by counting backward. We had fun with this one.