Collecting Slogan Postmarks, by C R H Parsons, et al.

Published by the authors, 1986.  S/B, 220pp.

A guide to the development, use, and collecting of UK slogan postmarks.  General, Exceptional, Local Publicity, Post Office Savings Bank, Maritime, and Field Post Office slogans used between 1917 and 1969 are listed with details of dates of use and value.  There is also a section that discusses varieties and other items of interest, such as errors, special events, inverted slogans, souvenir ('dummy') mail, First Day Covers, special dies, and regional and foreign slogans.  Illustrated in black & white and colour.