The chemical methods, old and new, how to decaffeinate coffee

Constituents of coffee, chemical analysis of coffee, broken into carbohydrates, etc.

Second website talking about decaffeinating methods.

Swiss Water, the company, who have patented the method of extraction of caffeine with carbon
 (Activated carbon filters website)

Amount of caffeine in various servings of coffee

Effects of caffeine on the nervous system

Caffeine molecule

Other drinks containing caffeine

Caffeine pills and the effects on the body

Background chemistry

Concise Encyclopedia of Chemistry, Walter de Gruyter, 1993