Over a year ago--I discovered Susan Jeffers' books at the library.
I REALLY like her.
She doesn't mention LOA specifically at all--but I think that her teachings are very compatible with it.
I am thinking of starting a group about her if anyone else is interested.
Please let me know if you are.
P.S. A few of her books are Dare To Connect, Embracing Uncertainty, and Feel The Fear And Do It Anyway