A while ago I read an interesting and moving article in the Guardian Weekly. It was about Native American tribes in the USA who are trying to revive their languages, many of which are nearly extinct. It is too late for Eyak, about which I wrote earlier, but for others there may still be hope now that many tribes are regaining their confidence and the deliberate suppression of native languages by the dominant English-speaking culture is slowly abating.
You may find the the article on The Guardian’s website. It is well worth reading.