On Fri, 29 Dec 2006 22:17:15 +0000, asdf
wrote:

On Fri, 29 Dec 2006 14:19:51 -0600, Tristán White wrote:

Any still-in-use signs directing people to Aldwych or Ongar perhaps? That
would beat the 1999 sign by 5 years :-)

There was a discussion here a few weeks ago about line diagrams that
still show Aldwych.

The ones at some District/Piccadilly stations still show the
interchange at Hammersmith as being with the Metropolitan Line.

Any advance on 1990?

Chiswick Park still has a Mark Lane sign, but that might not count as
it's a deliberate preservation of a historic sign, complete with
explanatory plate.