It's great to see that the US Federal Aviation Administration's Corporate Learning and Development service has recommended my books to staff wishing to maximise their writing skills as follows:
"Have you always wanted to express yourself better in writing? Or, have you gotten feedback that suggests you could communicate more effectively in your e-mails.
If you believe that your writing could be more clear, concise, and compelling, then the titles below will help. You’ll learn to recognize and repair the common errors that prevent your writing from being as effective as you would like it to be.
FAA Corporate Learning and Development has a variety of online resources…."