Prolit -- A culled compilation of literature about heavy-particle radiation therapy, including protons, other hadrons, and heavy ions
PTCOG.com Particle Therapy Co-operative Group of scientists/physicists/physicians, semi-annual newsletters and worldwide proton facility updates.
Brotherhood of the Balloon (www.protonbob.com) - support group of thousands of men treated at Loma Linda for prostate cancer who share before and after treatment experiences.