This testimony on the National Library Service for the Blind and Physically Handicapped, Library of Congress (NLS) provides information on: (1) NLS authority; (2) background; (3) functions and responsibilities; (4) Office of the Director; (5) director; (6) management; (7) budget; (8) division/section/office functions, including the Administrative Section, Publications and Media Section, Automation Office, and Research and Development Officer; (9) Materials Development Division, including the Materials Development Division Office, Bibliographic Control Section, Braille Development Section, Collection Development Section, Engineering Section, Production Control Section, Recording Studio, and Quality Assurance Section; (10) Network Division, including the Network Division Office, Consumer Relations Officer, Inventory Management Section, Music Section, Network Services Section, and Reference Section; (11) staffing; (12) appraisal; (13) staff profile; and (14) contact points. The appendix includes data on: selected trends in program activity, 1974-98; readers and circulation, 1994-98; summary of workload, 1996-2000; Braille/audio acquisition, 2000; machine production schedule, 1996-2000; Year 2000 machine/equipment acquisition; machine repairs, 1984-98; machine age distribution, 1999; network map; and digital talking book technical activity planning. (AEF)