Originally Posted by Mildly Consumptive
Canadian National railway, designed in 1960 and still in use
I was about to add that one. I think it's my favourite corporate logo, for several reasons:
- It is legible as text: it actually says "CN".
- It strongly suggests the nature of the business, a continuous railway.
- It has no texture and only one colour, so it is easily reproduced for use on any surface (including by engraving): the side of a boxcar, a granite sign on a building, letterhead, a bucket of railway spikes -- there's no place you can't put it and still have it look good.
- It appears to be timeless: it fit in as well with the designs of the 1960s as it does today.