(původní rámec 6 byl sloučen s č. 4), zcela mimořádný soubor!, rozlišeno podle článku, který si můžete přečíst zde.
Die Postwertzeichen der russischen Landschaftsaemter
Post and Philately in Wielkopolska
Luftpostens historia i Norden, The History of Airmail in Scandinavia by Örjan Lüning
Die ungarische luftpost, handbuch und katalog, Band 1. 1870-1930
The postal history of the international brigades in Spain 1936-39 by Ronald G Shelley
Ottoman Empire Postal History, The Arsman Collection
Russische Postzensur, Russian Postal Censorship 1914-1918
Manual del experto en sellos de España (1850-1900) (siglo XIX) - Dr. Luis Blas
Der Schwarze Einser mit seinen hundert Jahre alten erst jetzt entdeckten interessanten Geheimnissen im Markenbild: [100 Jahre Bayerische Briefmarke.]
Cochin Postmarks and Cancellations
The Ottoman Empire Postal History by Necib Cengiz Arsman
The Pre-Stamp Postal Markings of Mexico by Otto Yag and John K. Bash
The Departmental Stamps of South Australia
Postage Stamps of the Cape of Good Hope, The "Maximus" Grand Prix Collection
German Submarine Mail of World War I by Bernard A. Hennig
Stehende Helvetia / Helvetia Debout 1882 – 1907 (P. Guinand, G. Valko, J. Doorenbos, M. Hertsch)
Reference Manual of BNA Fakes, Forgeries and Counterfeits by Kenneth W. Pugh
Canada's Decimal Era 1859-1868 by George B. Arfken and Arthur W. Leggett, Vincent Graves Greene Philatelic Research Foundation
The Pence Issues Of Newfoundland 1857-1866 by Robert H. Pratt, Vincent Graves Greene Philatelic Research Foundation
The Large Queen Stamps Of Canada And Their Use 1868-1872, by H.E. & H.W. Duckworth, Vincent Graves Greene Philatelic Research Foundation
Canada´s Small Queen Era, Postal Usage during the Small Queen Era 1870 - 1897, by George B. Arfken, Vincent Graves Greene Philatelic Research Foundation
The Postal History of the Canadian Contingents Anglo-Boer War 1899-1902, by Kenneth Rowe, Vincent Graves Greene Philatelic Research Foundation
Die Abstempelungen der Ungarischen Postämter auf Marken von Österreich 1850-67, ISBN 0-900631-10-4
Ke srovnávacím účelům!
