Early British newspapers, such as the London Times or the Observer include much legal information that is useful in research. Many of these printed sources are available on microfilm, and a few are starting to be digitized online. The Library of Congress Periodical Reading Room is a very good place to go for indices to obscure early newspapers, and for many of the microfilm editions of these papers. Check online resources for those newspapers now available online, such as the London Times.Current and historical journals are also very important sources of information.