Pretty new to the reference box is this 1973 guide to the Jungfrau railway in Interlaken, Switzerland
. As you would expect from a piece of Swiss design of this era, it's packed full of wonderful logos, typography and adverts.
This centre spread map has the only colour print throughout and just look how slick their chosen palate works with the black & white graphics and illustrations.
Here are a selection of my favourites...
to see what other delights are hiding in our reference box.