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Article
Harold F. Pitcairn : pionnier de la poste aérienne
LEVY Howard | 2001
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Monographie
The autogiro : its characteristics and accomplishments
PITCAIRN Harold F. | ETATS-UNIS. Government printing office | 1920
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Article
Steve Pitcairn's Pitcairns : although Harold Pitcairn is perhaps best known for his rotary wing endeavours with the Pitcairn Autogiro, he also designed several open cockpit biplanes
LEVY Howard | 2006