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This section isn't appropriate in the main article, but so as not to lose it I'm copying it here:

This article will include references to historical documents ^[1], scientific publications ^[2], patent records ^[3], methods for working with iridium ^[4], and contemporary material sources ^[5].

PamD ( talk) 07:32, 10 October 2009 (UTC) reply

he made nibs in 1880, not retipped them. Vinithehat ( talk) 04:47, 2 November 2009 (UTC) reply