Mid-19th Century currency conversion?

Question: Mid-19th Century currency conversion!?

Roughly how many USD ($) was 1 english guinea in the mid 1800s!?Www@QuestionHome@Com

Best Answer - Chosen by Asker:

Try this for historical conversions:

http://futureboy!.homeip!.net/fsp/dollar!.f!.!.!.

You can insert the currency and year that you want!.

Oh, this might help, too:

http://www!.nationalarchives!.gov!.uk/curre!.!.!.Www@QuestionHome@Com