The International Pinguicula Study Group was an organization active in the 1990's dedicated to furthering the knowledge of Pinguicula and promoting its popularity in cultivation. During its active period, the Group produced 10 Newsletters. Eric Partrat scanned the Newsletters and they are now available as PDFs on the ICPS web site at
http://www.carnivorousplants.org/IPSG/
http://www.carnivorousplants.org/IPSG/