Inside a Northern line 1972 Mk1 Northern line unpowered trailer
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/47739225@N08">citytransportinfo</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/citytransportinfo/49220267357/">1972-Mkl-inside-T-full-length</a>