That's a great link; thanks! I've heard the slave explanation from numerous people at various stud farms, but not everything we hear is true... Still, southern

That's a great link; thanks! I've heard the slave explanation from numerous people at various stud farms, but not everything we hear is true... Still, southern Missouri has lots of limestone (it's "the cave state"), and had lots of Irish and Scottish immigrants, and I can think of precisely one "slave fence" in the whole state. If the difference wasn't limestone, and it wasn't Irishmen, maybe it was that Kentucky had lots of rich tobacco plantation owners, and Missouri didn't.