Airlines -- Directories

The Observer's world airlines and airliners directory

compiled by William Green and Gordon Swanborough, airline directory by M.J. Hardy.

The world's major airlines

David W. Wragg.

Airlines worldwide: more than 360 airlines described and illustrated in colour

B. I. Hengi.

World's air fleets

[by] David W. Wragg.

The world's major airlines and their aircraft

David Wragg.

Plunkett's airline, hotel & travel industry almanac

Jack W. Plunkett

The Observer's world airlines and airliners directory

compiled by William Green and Gordon Swanborough, with additional material by M.J. Hardy.

Passenger aircraft and airlines

by John Taylor and Susan Young.

Inventory of world commercial air carriers =: Répertoire mondial des transporteurs aériens commerciaux.

International Civil Aviation Organization.

World directory of scheduled common carrier airlines in operation Aug. 21, 1950.

United States. Civil Aeronautics Board.