“The Complete Encyclopedia of Knives” by Hartink, 1999, colour and photo illus in DW; “The Gun Digest Book of Knives” by Hughes and Lewis, 1973, card covers; “Levines Guide to Knives and their values” 1985, card covers; “ A History of Knives” by Peterson, 1966, illus, in DW, “Japanese Swordsmanship” by Warner & Draeger, 1993, illus, card covers. GC. (5)