Publications
Envelope and Letter Folding
Index of Convention Packs 1979-1991
Index: BOS Magazines 1-100
Index: BOS Magazines 101-120
Napkin Folds
The Silver Rectangle
Models
Hermetic Letterfold
Hexagon
Hexagon
Hexi-carton
Hexicarton
Hexicarton
Keel Lid
Kenton envelope
Letter Fold
Lined Envelope
Locked Envelope