She was in two versions of The Miracle Worker - the 1962 feature film (as Helen Keller opposite Anne Bancroft's Annie Sullivan) and the 1979 TV-movie (as Annie Sullivan opposite Melissa Gilbert's Helen Keller). Here are photos of her in both roles:

I enjoyed both versions Patti and Melissa are great actresses.

I've seen the original but never the one with Melissa Gilbert. I'll keep my eyes peeled for it.

same here. Anyone know if the Melissa Gilbert one is on DVD?

Not that I've seen. :(

same here. Anyone know if the Melissa Gilbert one is on DVD?
Yes it is! It was released on DVD in 2009 by Shout Factory.