The Channel Islands: Their Postal History, Stamps, and Postal Markings

British Postage Stamps by S.C. Johnson (1944)

The L.S.D. of Stamp Collecting" di Richard Rossall 1946

John Palmer (of Bath); Mail Coach Pioneer - Charles R. Clear - Blandford Press,

United States Postage Stamps, 1894-1910 - Fred J. Melville

Perou: Obliterations Postales de 1857 a 1873 by Georges Lamy and Jacques-Andre

Cyprus - Its Postal History and Postage Stamps by Wilfrid T. F. Castle (1952)

I Bolli delle Romagne: Dalle Origini alla Fine del XIX Secolo di Mario Gallenga

Gli Annulli Marittimi Italiani in uso pre 1891  Umberto Del Bianco

British Stamps" di Patrick Hamilton 1948