The sole source: the Library of Congress National Library Service for the Blind and Physically Handicapped

The Library of Congress National Library Service for the Blind and Physically Handicapped leads a co-operative network of specialized libraries and ancillary agencies that are delivering a successful programme of reading and informational services to blind, visually impaired and handicapped users. Its unique position within the Library of Congress and the benefits which emanate from this relationship are described. This current review outlines and discusses the development, role and functioning of the National Library Service.