Just out, and yes, the book includes a paper on prescriptivism, my own! The project may be finished, but new publications still appear. So:

Ingrid Tieken-Boon van Ostade (2019), Usage guides and the Age of Prescriptivism. In: Birte Bös and Claudia Claridge (eds.), Norms and Conventions in the History of English. Amsterdam: John Benjamins.7−28.

This volume is only one of two: congratulations, Birte and Claudia, on this wonderful publication!