This requirement was issued by the Library of Congress/FEDLINK located in Washington, D.C., on behalf of the Defense Intelligence Agency Library. This Justification and Approval is issued pursuant to ... This requirement was issued by the Library of Congress/FEDLINK located in Washington, D.C., on behalf of the Defense Intelligence Agency Library. This Justification and Approval is issued pursuant to Federal Acquisition Regulation (FAR) 13.5, Simplified Procedures for One Source.