Australian Six - Harkness & Hillier. Also see Australian Six; Australian Six - distributers: Australian Six - Harkness posts.
Harkness and Hillier Limited were motor engineering firm in Sydney, New South Wales, who reputably had a fleet of 9 Australian Six hire cars and later took over production of the Australian Six in 1923 until 1925, when production stopped.
Also part of the Ivan Hoffmann Collection, but not appearing here are copies of - correspondence obtained from the National Archives of Australia (NAA); correspondence with Muesum of Applied Arts and Sciences; list of references; articles from magazines and books (including racing results); photos.
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Harkness & Hillier Motor Engineering Works
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| 15 January 1931 Motor Life |
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| HARKNESS & HILLIER Aero Engine |
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| Harkness & Hillier |
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| February 2006 Motor Racing Australia |
