FX currency futures from CME
CAD/USD Chart
http://chartsrdc.cme.com:443/cs/charts.jsp?_symbol=6C&_month=-1
specification
http://www.cme.com/trading/prd/fx/canadian_FCS.html
GBP/USD Chart
http://chartsrdc.cme.com:443/cs/charts.jsp?_symbol=6B&_month=-1