http://lcweb.loc.gov/z3950/agency/

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Library of Congress
Z39.50 Maintenance Agency

• http//lcweb.loc.gov/z3950/agency/
• rden_at_loc.gov

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• Maintenance
• Development
• Registration
• Implementor Information

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Formal Standards Maintenance

• Defect Reports
• Amendments
• New versions

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Informal Maintenance

• Clarifications
• Commentaries
• Implementor Agreements

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Z39.50 Standard - Related Specifications - Object
Identifiers - Implementor Register - Z39.50
Profiles - ZIG Meetings - Other Resources -
Site Index
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Historical Background

• 1978-82
• Early Development/ Investigation
• 1982-83
• Linked Systems Project Protocol
• 1883-84
• Submitted to ANSI Z39 (renamed NISO in
  1985). Z39.50-1984. Ballot failed.

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Historical Background (continued)

• 1984-87
• Continued Development
• 1988
• Re-submitted. Approved as Z39.50-1988.
• 1979-89
• Z39 SC D

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Historical Background (continued)

• 1984-91
• ISO SR
• 1990
• ZIG
• 1989-90
• Z39.50 Maintenance Agency

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Historical Background (continued)

• 1992
• Z39.50-1992 (version 2)
• 1990-95
• Development of version 3
• 1995
• Z39.50-1995
• 1998
• ISO 23950