GERMANY – Onofri, Mario: L.Z. 127 Graf Zeppelin. Trasporti Postali (1958), 124 pages, softcover; PLUS: Onofri, Mario: I Dirigibli Zeppelin. Documenti Postali (1960), 209 pages, softcover: PLUS: Field, Francis J.: The Deutsche Luft hansa and The Lufthansa, 12 pages, no page numeration, softcover; PLUS: Falk, Arthur: Hindenburg Crash Mail: The Search goes on (1976), 64 pages, softcover. All titles in good condition. Estimate: 60 Euro
