Books about Salad

Happy New year everyone and welcome to new members of the group :)

Some of you may have read I'm having a 52 Week Salad Challenge over on my blog this year.

I have a couple of books to help me: Joy Larkcom's 'The Organic Salad Garden' and Charles Dowding's 'Salads Leaves for all Seasons'.

Are there any others you'd recommend and why? 

What do you think of either of these two?