The British post office from its beginnings to the end of 1925 (1926)
Marshall, C. F. Dendy (Chapman Frederick Dendy), 1872-1945 · London, H. Milford, Oxford University Press · leaf 67
Postal service · History · Postage stamps · Stamp collecting · Postmarks · Postal service -- Great Britain -- History · Postage stamps -- Great Britain
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
