Etching related Links
- Biringuccio - The Pirotechnia of Vannoccio Biringuccio, Dover Books
- Hind, Arthur M. - A History of Engraving & Etching, Dover Books
- Smith, Cyril Stanley - A History of Metallography, The University of Chicago Press, Copyright 1960
- Oakeshott, Ewart - Records of the Medieval Sword, Boydell Press, Copyright 1991
- Paggiarino, Carlo and Pruner, Hans – The Churburg Armoury, Hans Prunner, Copyright 2006 (Photographs of the armour collection.)