Louie Howland has just released a new biography of the exceptional Starling Burgess. I have not finished it yet, but the production and depth is of high quality. There are quite a few original lines which could have deserved more detail.
Jacques Taglang has recently written a complete history (including recent refits) of Gerhard Rønne's 10 yachts, most of which were christened Runa. The book is available in English and in French. For the French speakers, there is a little video presentation by François Chevalier that you can watch here.