These firms typically run teams who page through newspapers looking for matching articles, then post or fax to the client. New technologies are also advancing into this field. Most local bookstores will gladly help you locate a book from their directories, but if you want a book from abroad, or an article from a journal or magazine, you will need the assistance of another set of information workers. Many of the document delivery firms are closely tied to information organizations. Little information is available about these organizations.
Closing Note Commercial information organizations are many and varied.
I trust there is enough here to determine if one of these types of organizations can provide the solution you are looking for.