BOOK REVIEWS. Issue 4 (October 2019) - Dorsett, Mark; Threlfall-Holmes, Miranda; Gregory, Andrew; Pettersen, Alvyn; Nichols, Bridget; Brouwer, Douglas; Patten, Malcolm; Wielander, Gerda; Harle, Tim; Worthen, Jeremy; Taylor, Simon J.; Keenan, William; et al.