This site provides an exchange rate calculator for the current day and for any day since January 1, 1990.
Users can also customize the display.
This is a list of discount stock and commodity brokers compiled by an individual investor. The Options Industry Council is an educational resource for the options industry. The site allows users to request free videos and software, provides a list of free seminars, and has press releases and a glossary. This company offers fee-based historical stock options information. Users can register for a two-week trial.