As you will all have noticed with the original District Line Board having accepted a wrong signal and disappeared into the ether, things are a bit bare on this board. Many of you will also know that in the past I have posted a number of diagrams as part of various discussion on this forum. Therefore as a starting point for discussion I've listed below many of the same links. Many of the original threads may well have been on other boards in the forum and therefore still exist but all of them relate to the District Line.