• Health Research Books (Paperback) www.healthsearchbooks.com
• www.iblindness.org (Free download and possible originals to purchase)
• www.Central-Fixation.com (Free download)
• www.Central-Fixation.com (Free download of 'Better Eyesight Magazines - not complete)
• www.iblindness.org (e-book download to purchase)
• www.visionsofjoy.org (e-book download to purchase)
• Better Eyesight Magazines - edited by Thomas R. Quackenbush (paperback - purchased from bookshops)
• Not currently in print, but secondhand may be available through online bookshops
• Available new and secondhand at bookshops and online bookstores
