Here’s the pitch that Saul Bass gave to the Bell System when he was updating their identity. It isn’t a must watch but I’m posting it for a couple of reasons.
#1). The beginning is really weird. I can’t imagine how this played to a bunch of corporate execs. The 60s!
#2) The second part contains a nice introduction to logo design and typography. It also is a mostly non-annoying explanation of what logos and identities do. It also highlights how this identity was more than a logo. It was a system of elements that included a wide range of things – from jewelry to printed material to trucks.
Each impression contributes to the whole. Each signal, one piece of a mosaic.
Libraries would benefit from this attention to detail and holistic thinking.