Exchange Rates

Bloomberg: Market Data: Currencies
Publisher: Bloomberg

Currency Converter
Publisher: OANDA

Dollar-Pound Exchange Rate From 1791
Publisher: MeasuringWorth.com

European Central Bank Statistics
Publisher: European Central Bank

European Commodity Prices 1260-1914 - Allen - Unger Database
Publisher: Robert C. Allen and Richard W. Unger, University of British Columbia

Exchange Rates: US$ and 41 Currencies (historical)
Publisher: MeasuringWorth.com

Federal Reserve Statistical Release H.10 Foreign Exchange Rates (weekly)
Publisher: U.S. Board of Governors of the Federal Reserve System
Catalog Record

Foreign exchange rates…
Publisher: Federal Reserve Bank of New York

Fxtop.com - Online Currency Converters
Publisher: Fxtop

MeasuringWorth.com Calculators
Publisher: MeasuringWorth.com

Medieval and Early Modern Data Bank (various databases)
Publisher: Rutgers University Libraries

Pacific Exchange Rate Service
Publisher: Policy Analysis Computing & Information Facility in Commerce. University of British Columbia.
Catalog Record

Universal Currency Converter
Publisher: Xe.com