In message , at 01:50:33 on
Sun, 6 May 2007, Charles Ellson remarked:
London Transport used to issue a "proper" railway map (Underground
lines in usual colours, all BR lines black, main roads shown) the same
size as the bus map until the 1970s but it tended to be of variable
availability from other than the few information booths/offices.

I've seen a large (about 4ft square) geographical map that meets this
description, at the LT Shop in Covent Garden. Would have been about
eight years ago - not looked recently.
--
Roland Perry