BSI Currency Code Service (ISO 4217 Maintenance Agency) - With a downloadable list of alphabetic and numerical codes and an offer for subscribing to a for-pay updating service. - http://www.bsi-global.com/en/Standards-and-Publications/Industry-Sectors/Services/BSI-Currency-Code-Service/
Currencies of the World. - A number of currencies (including recently replaced ones) sorted by country, with popular abbreviations, ISO 4217 currency codes, name and ratio of minor currency units and type of exchange rate regime. - http://fx.sauder.ubc.ca/currency_table.html
World Currency Formats and ISO 4217 Codes - A compilation of ISO 4217 codes, currency and subunit names, and display formats (by theFinancials.com). - http://www.thefinancials.com/vortex/CurrencyFormats.html
ISO 4217 Type Currency Symbol List - Two lists of the generally used three-letter currency codes, sorted by country and by currency. Site cautions that the codes may in some cases differ from those prescribed by ISO 4217. - http://www.xe.com/iso4217.htm