HeinOnline contains 2,500 law-related periodicals and 200,000 titles of legal history and government documents in a fully searchable, image-based format. The database contains the entire Congressional Record, Federal Register, and Code of Federal Regulations, U.S. Reports back to 1754, and entire databases dedicated to treaties, constitutions, case law, world trials, classic treatises, international trade, foreign relations, U.S. Presidents.
JSTOR is database that contains scholarly articles from many disciplines and subject areas. Much of its content is available in full-text (although full-text of recent articles may not be available for a year or more).
Oxford Scholarly Authorities on International Law contains full-text online editions of market-leading reference works and treatises published by Oxford University Press, such as Oppenheim, and the Oxford Commentaries on International Law. (A Seton Hall Law Rodino Library subscription)