Does anyone know of any good sources/somewhere useful I could go to to find old data about the USD? I'm thinking anywhere from 1970-1980 and up would be fine as far as time goes, although I would like to be able to find data as old as 15 years old. If possible, maybe just the USD data alone; if it is somehow paired with another currency, I would prefer it to be the GBP. Sorry if I sound demanding, I mean no aggression/offense. Thanks.