Beschreibung
Doyle, John Kevin, The Onset of 'The War' in German New Guinea, Beitrag mit Abb. in Jubiläumsheft Germany Philatelic Society 1949-1999 (USA), des German Postal Specialist, January/February 1999, #56777
Doyle, John Kevin, The Onset of 'The War' in German New Guinea, Beitrag mit Abb. in Jubiläumsheft Germany Philatelic Society 1949-1999 (USA), des German Postal Specialist, January/February 1999, #56777