Armstrong, Douglas B. and Greenwood, Chas. H. - War Stamps of the Allies 1914-1920
An Historical RecordPublisher: D. Field, London, nd (circa 1921).
Paperback, 96 pages + xvi plates, slight wear to edges of the covers, covers a little toned, in Good condition.
Very scarce book on World War I issues of the Allies, including Togoland, Bushire, Salonika, Long Island, Mafia Island, etc, etc. 
