Well, Bowie knives were banned in most of the Southern and old Southwestern states during the 1840s -1860s, based almost entirely on news stories of the horrific duels fought with them. It is illegal, for instance, to carry a Bowie Knife in Texas, where Jim Bowie died for Texan freedom or in Arkansas and Louisiana, the two states that can make the most supportable claims for originating the Bowie knife. In Virginia and Maryland, Bowie Knives are classed as dangerous weapons and may not be carried concealed, nor may they be carried openly with the intent to do bodily harm to anyone. The question of doing bodily harm in self-defense is somewhat up in the air, but would probably be more liberally interpreted in Virginia than in Maryland and probably more liberally interpreted in the more rural portions of those states than in the more urban portions.