Abstract

Get full access to this article
View all access options for this article.
References
1.
Hudgeons
M.
(1987 ). The official 1988 blackbook price guide of United States coins. New York : The House of Collectibles.
2.
Hudgeons
M.
(1987 ). The official 1988 blackbook Price guide of United States paper money. New York : The House of Collectibles.
3.
Hudgeons
M.
(1987 ). The official 1988 blackbook price guide of United States postage stamps. New York : The House of Collectibles.
4.
Koeze
P.
(1983 ). Tactile identification marks for the visually handicapped (unpublished paper).
5.
Reinfeld
F.
(1959 ). The story of Civil War money. New York : Sterling.
6.
Stack
N.
(1987 ). U.S. coins of value New York : Dell.
