There are many times when people are looking for information that may be more nebulous, or where filings and websites only provide some information - like biographies of the executives, information on intellectual property, marketing/advertising information, corporate strategy, and clients. Using information found in filings, web pages, and other published sources along with searching current news and trade publications can provide a more detailed picture. Search on:
There are databases for searching news and trade publication and both can be helpful for those researching both public and private companies; the Library of Congress subscribes to many of them. However, check to see what your local public library subscribes to for access. The subscription resources marked with a padlock are available to researchers on-site at the Library of Congress. If you are unable to visit the Library, you may be able to access these resources through your local public or academic library.