The Penis Exercise Forum
- Online community that deals with non surgical enlargement via exercises, includes reviews and articles.
- http://www.pegym.com

Mayo Clinic: Beware of Penis-enlargement Scams
- Warning from the Mayo Clinic regarding various scams surrounding Penis Enlargement
- http://www.mayoclinic.com/health/penis/MC00026

A Natural Route to Better Sex?
- A physician answers a question about the effectiveness of non-surgical methods and herbal treatments.
- http://www.drweil.com/u/QA/QA192284/

Grow Jobs
- In depth article discussing the recent popularization of penis enlargement. Covers the risks and benefits of various methods and provides links to further resources. [Boston Phoenix]
- http://www.bostonphoenix.com/archive/features/00/01/20/PENIS_ENLARGEMENT.html

Thunder's Place
- Contains forums and message boards discussing non-surgical methods. Free membership is required.
- http://www.thundersplace.com/

Penile Augmentation Surgery
- Study into the effectiveness of common surgical methods of penile enlargement. Includes direct feedback from men who have undergone such procedures. [Electronic Journal of Human Sexuality]
- http://www.ejhs.org/volume2/klein/penis10.htm