A three part article from the Braille Authority of North America
Part 1, Part 2, Part 3 or the complete article as a pdf file or as a brf file
"Braille itself has been instrumental in making possible the integration of blind people into society, and, in turn, this increased integration has driven developments in the use and production of braille. The more integrated that blind people have become, the greater are the demands placed on sources of literacy. Are the literacy tools keeping up? ..."