HeinOnline This link opens in a new windowHeinOnline is Hein’s premiere online product with more than 90 million pages of legal history available in an online, fully-searchable, image-based format. HeinOnline bridges the gap in legal history by providing comprehensive coverage from inception of more than 1,700 law and law-related periodicals. HeinOnline provides exact page images of the documents in PDF format just as they appear in the original print. This means that all charts, graphs, tables, pictures, hand written notes, photographs, and footnotes appear where they belong!