"The basis of this book is the PhD thesis submitted by Audrey Baker in 1937 to the Courtauld Institute of Art of the University of London"--Back cover.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
English panel paintings, 1400-1558 : a survey of figure paintings on East Anglian rood screens by Audrey Baker. ISBN 9781904982692. Published by Archetype Pub. in 2011. Publication and catalogue information, links to buy online and reader comments.
