HeinOnline Academic This link opens in a new windowHeinOnline Academic is the world’s largest fully searchable, image-based government document and legal research database. It contains extensive coverage of U.S. statutory materials, U.S. Congressional Documents, all of the world’s constitutions, all U.S. treaties, collections of classic treatises and presidential documents. Coverage of United States government publications is comprehensive back to inception, and all titles are exact replicas of the official print publication from the Government Printing Office. A large assortment of international resources are also available.