Card Catalog Magic

As you may recall, just this past fall, the LTC launched its new catalog Encore,
Such a fine new tool, you’d be a great fool, if you did not use it to help you find more.
In days long gone by, before the web in the sky, finding information could be quite hard,
You’d search for long days, in so many ways, to find that magical catalog card.

Yale University old catalog cards (video)