If you do a Google search for "card catalog" it will likely return Pinterest-worthy images of antique furniture for sale — boxy, wooden cabinets with tiny drawers, great for storing knick-knacks, ...
Like an old friend, it was there when you first went browsing for books as a youngster, helped you through those grueling high school research papers, and was still there when you wanted to look up ...
Today, people use the antique wooden cabinets to store their knick-knacks. But these card catalogs once held the keys to a world of information. A new Library of Congress book explores their history.