H stands for Henkes, Kevin Henkes that is.
The letter H today stands for Kevin Henkes. He is an award winning children's author and someone every writer interested in children should know and follow. His newest book Little White Rabbit is simple yet charming. He is talented and does his own illustrations too.
He knows how to write tight and to make every word count so he is a fabulous example of what new writers need to learn. His book Lilly's Purple Plastic Purse is another great example of excellent writing. Visit his website for all of his books and some great tips on writing. There is even a video of him illustrating The White Rabbit.