History is systematically collected information about the past. When used as the name of a field of study, history refers to the study and interpretation of the record of humans, families, and societies. Knowledge of history is often said to encompass both knowledge of past events and historical thinking skills.
Traditionally, the study of history has been considered a part of the humanities. However, in modern academia, history is increasingly classified as a social science, especially when chronology is the focus.
Aviation :: Transportation
History :: Aeronautics

All the World's Rotorcraft - Provides pictures and background from the first designs to current machines. Also offers dictionary and links to related resources.
Meta Description: [ All the World's Rotorcraft - the biggest helicopter collection in the world, more than 700 helicopters and autogyros ]
Blueghost Green - History of this helicopter cavalry troop from the Vietnam War era of helicopters.
Helicopter History Site - This site traces the evolution of rotary wing aircraft back to Leonardo Da Vinci.
Meta Description: [ The helicopter history site traces the evolution of rotary wing aircraft back to Leonardo Da Vinci ]
Helicopters and Autogiros 1939 to 1945 - Aviation history in the WWW: Index of aircraft by category and time period.
Igor I. Sikorsky Historical Archives, Inc. - Dedicated to acquiring, preserving and protecting the historical materials that chronicle the aviation careers of Igor Sikorsky, the companies he founded and the accomplishments of its employees.
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