On Mon, 11 Sep 2006 19:09:05 +0100, Tim Roll-Pickering wrote:

I think it was first officially shown on the map in 1977 (and I'm sure
someone will correct me if I'm wrong) -- but it hasn't even been
consistently shown since then. At some point in the 80's, it vanished.
And then in the late 80's or early 90's, it returned; around the same
time, the Northern City line (aka Great Northern Electrics) vanished.

Here's an example of the initial unofficial appearance on the map, as
displayed at the Museum Depot:
http://greenberger.no-ip.com/gallery...2_itemId=35525

I note that Camden Road is shown as an interchange with Camden Town - did
this make it onto the official map at any stage?

Another oddity is that there don't seem to be enough stations between
Highbury & Islington and Broad Street. I thought it went Canonbury,
Dalston Junction, Haggerston, Hoxton; but only two of these are shown
(I can't read the text but it looks like it could be the first two).