I always find it amusing when picture books include letters. Perhaps the best example is Click Clack Moo: Cows That Type.
Dear Farmer Brown,
The barn is very cold at night. We'd like some electric blankets.
Letters can be a cute and clever way to convey info. They also provide authors with an easy way to switch points of view.
In Tightrope Poppy the High-Wire Pig Poppy takes a fall from the high wire and emails Mom:
I'm no star. Let's not pretend.
Then, of course, Mom emails back:
My dearest Poppy, Mom replied,
I know you're sad and crying.
You can't lose heart
on one bad start--
some dreams take lots of trying.
Letters can also add variety to the rhythm of a story.
In the hilarious book, My Penguin Osbert, Joe is desperate to get rid of his Christmas present.
How are you and Mrs. Claus? We are fine.
Thank you for the great penguin named Osbert.
We take cold baths together and have
creamed herring for breakfast.
I am getting used to spending all day
in the snow.
Plus, it turns out I didn't have frostbite after all.
P.S. One more thing, Santa. If you feel like maybe
I should have asked for a different present,
and you want to swap, that would be OK.
I am going somewhere with this, but I am out of time for now.
So, more on this subject tomorrow!