Titanium Facts
Winterthur Swiss Precision Grinding Wheels Conversion & Data Handbook
Brown &Sharpe Geometric Dimensioning & Tolerancing
American Iron and Steel Institute Strip Steel Data Pocket Book
Starrett MetricTools card
Morse Cutting Tools Decimal Equivalents & Tap Drill Sizes card
Micro Carbide  Decimal Equivalents & Tap Drill Sizes card
General Electric GE
Controx Quick Tool Locator
Electrolizing's Guide to Plating Specifications