Our Intelligent Companions, the Plants: Contains much information on various mind/plant type experiments throughout history. Some people mentioned include Cleve Backster and J. Chandra Bose.
Chapter Six- Cleve Backster's Laboratory: A chapter in a web-based book by psychologist Ingo Swann. Deals with a trip made by Swann to Backster's laboratory and chronicles the first-hand experiment he witnessed.
Happy Plants: Deals with Cleve Backster's experiments and other mind/plant experiments, including ones backing up Backster.
Plant Articles by Judith Handelsman: A series of articles from various magazines. The second one has relevance primary perception discoveries, as it describes Handelsman's own experiences with the phenomenon.
Sacrifice for Science: Contains some information on Cleve Backster's experiments and the author's interpretations of the implications.
Subtle Energy: An article in a web-based magazine by Paul von Ward Lightworks. Deals with Cleve Backster's mind-plant discoveries and the author's speculations about them.
