The Derry Shed was the terracing across from the Main Stand, the Rangers End was behind the goal.
My only disappointment when we beat Bayern at Ibrox 72 was that the Rangers End, where I was, were singing different songs from the Derry!
Once the Derry became the Centenary Stand, the bambottery moved behind the goal. There used to be the occasional fight that would break out and fans not involved would back away leaving the gap in the crowd. After a couple of minutes as things calmed down, there was always one drunk fan who'd wander into the centre of the space singing The Sash/Billy Boys and within seconds, peace, brotherhood and harmony would be restored.
For the sheer awesomeness of the Rangers End, the first goal in the Old Firm game in January 75 shows it all.
Great old days!
Happy Days!