Tinted Safety Envelope Research Project
Look Inside The Envelope
Envelope Families
 1. Weave & Tile |
 2. Circles, Dot & Gons |
 3. Circles & Squares |
 4. Diamonds & Squares |
 5. Code |
 6. Stipple & Stucco |
 7. Hatch & Crosshatch |
 8. Straight Lines |
 9. Not So Straight Lines |
 10. Lines In Columns |
 11. Plaid |
12. Flakes & Stars |
 13. Images & Logos |
 14. Topos & Wood Grain |
 15. Log Jam |
 16. Unclassified Patterns |