Margaret: there are a number of good references now available.... there was an issue of the Journal of Human Lactation devoted to tongue tie.... 6(3) 1990.... possibly one of the lc's has this back issue and would be willing to lend it to you..... Allison Hazelbaker wrote her thesis through the Lactation Institute on tongue tie... in it she detail assessment and gives you the tools for same...availble from the institute: 16430 Ventura Blvd Suite 303 Encino Ca 91436. Dr. Jain from Canada spoke at the ILCA Confernence. She presented with a video that is now available... she has discussed on line but I do not have the digest date readily available....if noone else offers this informaiton I will retirve it for you ..... Good luck, Patricia Patricia