"Finding aids provide a gateway to this wealth of Library treasures, helping you discover and navigate through the thousands of boxes and folders that house each collection.
These guides provide comprehensive overviews of unique Library resources. Progressively detailed descriptions of a collection's component parts summarize the overall scope of the content, convey details about the individuals and organizations involved, and list box and folder headings. Special service conditions are noted, including terms under which the collection may be accessed or copied. Links are provided to digitized content, when available."
From "Finding Aids" Library of Congress. Accessed 9/9/2013.