U Form
Quiggin, Alison Hingston.  A SURVEY OF PRIMITIVE MONEY: THE BEGINNINGS OF CURRENCY. Reprint. London: Spink & Son, 1978.
Opitz, Charles J.  ODD AND CURIOUS MONEY: DESCRIPTIONS AND VALUES. Second Edition. Ocala, FL: First Impressions Printing, 1991.
Roberto Ballarini, Armi Bianche Dell'Africa Nera (Black Africa's Traditional Arms), Africa Curio, Milano 1992. 128 Pages.
p110 #68
Karl-Ferdinand Schoedler, Earth and Ore, 2500 Years of African Art in Terra-cotta and Metal. Panterra Verlag 1997. 369 Pages and maps.
p327 #634
Tom Joyce, Univ. of NC exhibition. Life Force at the Anvil, The Blacksmith's Art from Africa. Exhibition May - August 1998. 32 Pages.
p25 figure 10
Claudia Zaslavsky, Africa Counts: Number and Pattern in Africa Culture, Prindle, Weber & Schmidt, 1973.
p? figure 7 & 8
Other People's Money, Money in Africa

Last Updated on 2/05/00
By Stephen Cansler