Here's a good engraving website with many usefull historical links.

[mdengraver]

Engraving - Wikipedia, the free encyclopediaThe engraving is so fine that a normal printer can not recreate the detail of hand engraved images, nor can it be scanned. In the U.S. Bureau of Engraving ...
en.wikipedia.org/wiki/Engraving - 55k - Cached - Similar pages