Penicillins are a group of antibiotics which are derivatives of a specific fungus. Penicillin was the first agent which worked with serious conditions including staph and syphilis.
Regular Websites
The Amoxicillin 500mg web site describes the most prescribed antibiotic today; complete with dosage and side effects information. - Amoxicillin 500mg
http://www.amoxicillin500mg.com/
Web page gives an overview of gthe modes of action of Amoxicillin and other beta lactam antimiocrobics, the main classes, and a brief history of the discovery of penicillin. - MOA of Penicillin Antibiotics
http://bacteriology.suite101.com/article.cfm/moa_of_penicillin_antibiotics
About.com section devoted to a discussion of Sir Alexander Fleming, who discovered penicillin, how he came to discover it, and who the other people were who contributed to penicillin's maturity. - The History of Penicillin
http://inventors.about.com/od/pstartinventions/a/Penicillin.htm
Personal web page recounts the history of penicillin, who discovered it, how, and what it treats. - What the Heck is Penicillin?
http://people.ku.edu/~jbrown/penicillin.html