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    Re: Accuracy of Bygrave
    From: Gary LaPook
    Date: 2009 Jul 6, 11:01 -0700

    See the new topic "Flight Navigation Reference Works."
    On Jul 6, 1:59�am, "George Huxtable"  wrote:
    > Thanks to Gary for pointing us to three interesting documents on air
    > navigation.
    > Not having had great interest or knowledge about air navigation may explain
    > why I haven't come across any of those works before, or their authors. It's
    > interesting that "Most probable position", by M D Wright, covering air nav.
    > up to 1941, doesn't seem to have been published until 1972. I see that
    > several copies are available via Abebooks at reasonable cost. There was a
    > tantalising snippet remaining about �a convoy transatlantic flight of three
    > American flying-boats in stages in 1919 which was quite new to me.
    > As for the NACA report no 131, from internal evidence I would judge it to
    > date from the early 1920s. Can anyone offer a reference to the complete work
    > it forms a part of, and its date?
    > George.
    > contact George Huxtable, at �geo...@hux.me.uk
    > or at +44 1865 820222 (from UK, 01865 820222)
    > or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
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