Envelope and Letter Folding John Cunliffe Publisher BOS Year 1970 Language English Rating 3 3 / 5 Description BOS Booklet 25 Models in this book (40) Pg Model 0 Anchor Envelope 0 Wallet Envelope 0 Bar Envelope 0 N.B. Letterfold 0 Basic Letterfold 0 Box-pleated Envelope 0 Crane Envelope 0 Disc Envelope 0 Double-Lock Envelope 0 D.S. - Letterfold 0 Florentine Letterfold 0 Frog Envelope 0 Gusset Envelope 0 Harlequin Envelope 0 Hawk Envelope 0 J - Envelope 0 Kenton Envelope 0 K - Letterfold 0 M - Letterfold 0 Lined Envelope 0 Lozenge Envelope 0 L.T. Letterfold 0 Box-lock Letterfold 0 Preliminary Envelope 0 Purse Envelope 0 Sack Envelope 0 Magic Wallet 0 Single-Lock Envelope 0 Square Letterfold 0 Two-by-One Letterfold 0 T - Flap Envelope 0 Trap Envelope 0 Two-point Letterfold 0 Oblique Letterfold 0 Valentine Envelope 0 Valentine Letterfold 0 V - Envelope 0 W - Letterfold 0 Z - Letterfold 0 Hermetic Letterfold