The U.S. federal government is one of, if not the world’s largest publisher. Because that material has been produced using tax dollars, it has in an important sense already been “bought” by the citizen consumer. While many commercial aggregators greatly ease access to these documents by collecting them or their links into one easy location, they typically charge a sizeable fee for the convenience, and often overlook the more obscure items. The user, having already purchased the documents, may wish to exert the effort learning how to access these items from the original providers. The links within offer a variety of means to access these public domain titles.
Donovan, James M., "Why Pay for it Twice? How to Access Federal Materials in the Public Domain" (2006). Presentations. 30.