I've written several posts in the past about a technique for teaching a person with deafblindness to speak. That technique is called Tadoma, named after two children, one named Tad and the other Oma. Really. Here is one of my posts on the subject.
Although I have read a lot about Tadoma, I had never seen it actually done. We tried with Ashley but I never knew if I was doing it correctly.
This weekend I found this rare footage of Helen Keller using the technique with her teacher, Annie Sullivan. The video is really amazing, and Helen and Annie even more so!