Johnston has been the official typeface of public transport in London since 1916 and is still going strong. Edward Johnston was commissioned to design a clear display typeface – the resulting sans serif Johnston embodies the efficiency of the Underground system. I took these pictures at the London Transport Museum Depot, Acton where there's a well-used chest of the complete font family.
Its clean lines inspired Eric Gill, his pupil, to create the hugely influential Gill Sans. Over the years, Johnston has been tweaked and updated, creating different versions such as Johnston Delf Smith and New Johnston.
(post by Mike)