Vol. 2: 4th ed.
"This book is a revised and enlarged edition of the original chapter 5 from 1991" -- t.p. verso, vol. 2.
Previous ed.: / by A.R. Torrance and K. Morenweiser. c1991.
v. 1. Censorship handstamps, censorship wax seals, resealing label
v. 2. Postal censorship forms and memoranda.
British Empire civil censorship devices, World War II. Section 2, United Kingdom by Konrad Morenweiser. ISBN 9781908008015. Published by Civil Censorship Study Group in 2011. Publication and catalogue information, links to buy online and reader comments.