Lot no. 20883

Newall, Alexander S.: British External Airmails until 1934 (2nd edition 1996), 425 pages, hardcover; PLUS: Proud, Edward B.: Intercontinental Airmails. Volume One: Transatlantic and Pacific (2008), 632 pages, hardcover; PLUS: Baldwin, N. C.: British Air Mails 1784–1946 (1947), 213 pages + 1st supplement (4 pages), hardcover; PLUS: Field, Francis J. / Baldwin, N. C.: The Coronation Aerial Post (Aero-Field handbook No. 3, 1911), 82 pages, hardcover. All titles good to excellent. Estimate: 150 Euro