John,
There have been several predecessor illustatrions before the 1430's, especially the one by Konrad Kyeser or Eichstätt, 1405. So all these illustrations of devices more or less duplicated themselves thoughout the 15th c. and hardly any news can be expected before the Maximilan Zeugbücher ot the early 1500's.
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Last edited by Matchlock; 28th December 2011 at 01:55 AM.
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